Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhieu tang » chieu sang, hieu lang, nhiet nang
nhung cong » dung cong, thong cong, hang cong
tuong va » truong va, thuong va, luong va
cong tan » cong tac, cong san, cong thanh
tan gian » tran gian, dan gian, van gian
tung va » trung va, dung va, vung va
gian co » gian o, gian cua, gian cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu sach) or (nhieu tang)) - thanh ((tung va) OR (tuong va)) nhung cong tan gian co~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (nhieu tang)) - thanh ((tung va) OR (tuong va)) nhung cong tan gian co.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) or (nhieu tang)) - thanh ((tung va) OR (tuong va)) nhung cong tan gian co".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (nhieu tang)) - thanh ((tung va) OR (tuong va)) nhung cong tan gian co*.