Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
trung hay » trung ha, trung hai, trung huy
trung gay » trong gay, trung tam, trung cap
tan thanh » tran thanh, tang thanh, toan thanh
thanh cau » thanh chau, thanh mau, nhanh cau
chu sach » cau sach, thu sach, chuc hach
cong tan » cong tac, cong san, cong thanh

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

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