Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhieu tang » chieu sang, hieu lang, nhiet nang
manh tung » manh hung, thanh tung
trong san » trong cac, dong san, trong ca
tung cap » trung cap, cung cap, thong cap
cap dang » cao dang, cac dang, cap bang
cong san » cong tac
phan cau » phan dau, phan cac, phan tu

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 (nhieu tang)) - manh tung cap dang ((trong san) OR (cong san)) phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sach) OR (nhieu tang)) - manh tung cap dang ((trong san) OR (cong san)) phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu sach) or (nhieu tang)) - manh tung cap dang ((trong san) OR (cong san)) phan cau".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sach) or (nhieu tang)) - manh tung cap dang ((trong san) OR (cong san)) phan cau*.