Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
manh trung » manh tung, thanh trung, manh hung
dung cong » dung trong
cong dung » cuong dung, cong dong, cong luong
dung tran » dung trang, dung tren, hung tran
trung ap » trung cap, trung lap, trung tam
tran cau » tran chau, toan cau, ran cau
ap dung » xay dung, van dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chieu sach) or (chieu sang)) - manh trung ap dung cong dung tran cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sach) OR (chieu sang)) - manh trung ap dung cong dung tran cau.
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sach) or (chieu sang)) - manh trung ap dung cong dung tran cau*.