Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
chieu sang » chieu sach, chieu xanh, hieu lang
nhung cong » dung cong, thong cong, hang cong
cam nhung » cam hung, nam nhung, tham nhung
cong cam » cong cau, cong cac, cong nam
cong san » cong tac
than cau » toan cau, phan cau, thanh chau
than cap » khan cap, thanh lap, thanh cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu sach) or (chieu sang)) - thanh cong cam nhung cong san ((than cau) or (than cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sach) OR (chieu sang)) - thanh cong cam nhung cong san ((than cau) OR (than cap)).
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sach) or (chieu sang)) - thanh cong cam nhung cong san ((than cau) or (than cap))*.