Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
ngu phuong » ngu thuong, nhu phuong, ngu chuong
phuong dan » phuong danh, phuong doan, huong dan
canh tran » canh tranh, hanh trang, banh trang
tran van » luan van
toan cau » toan cao, toan tap, toan tai
toan ban » van ban
van ngu » han ngu, van nga, van ngo

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc thieu) OR (theo chieu)) xanh - canh tran van ngu phuong dan ((toan cau) OR (toan ban))~.
• Adding a wildcard symbol may retrieve word variants: ((toc thieu) or (theo chieu)) xanh - canh tran van ngu phuong dan ((toan cau) or (toan ban))*.