Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
theo chu » theo chieu, cho chu, chao chu
chu sach » cau sach, thu sach, chieu sach
anh dung » anh dong, anh huong, sach dung
cong san » cong tac
tcan cau » toan cau, toan cao, van cau
can cau » van cau, ban cau, ca cau

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 - anh dung va nhung cong san ((tcan cau) or (can cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu sach - anh dung va nhung cong san ((tcan cau) OR (can cau)).
• Adding a wildcard symbol may retrieve word variants: theo chu sach - anh dung va nhung cong san ((tcan cau) or (can cau))*.