Potser podríeu intentar variants ortogràfiques:
communication education » community education, communication communication, communication information
education methods » educational method, evaluation methods, estimation methods
methods session » methods section
du line » dual line, du livre, du lifei
du lei » fu lei, mu lei
d line » 2d line, 3d line, d lins
d ling » de ling, dr ling, _ ling

Pot obtenir més resultats si ajusta la seva cerca.

• Si vols fer servir operadors booleans, han d'estar en majúscules: communication education methods session ((((du line) OR (du lei))) OR (((d line) OR (d ling))))~.
• Afegint truncament pot recuperar més registres: communication education methods session ((((du line) or (du lei))) or (((d line) or (d ling))))*.