Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
thuc sach » thuoc sach, thu sach, thuat sach
thuc cach » thuoc sach, truoc cach, thuc hanh
tang quan » tang luan, tong quan, thong quan
nang quan » ban quan, nang suat
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: choi ((thuc sach) OR (thuc cach)) - anh ((tang quan) or (nang quan)) nhung cong tan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: choi ((thuc sach) OR (thuc cach)) - anh ((tang quan) OR (nang quan)) nhung cong tan toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "choi ((thuc sach) OR (thuc cach)) - anh ((tang quan) or (nang quan)) nhung cong tan toan ban".
• Adding a wildcard symbol may retrieve word variants: choi ((thuc sach) OR (thuc cach)) - anh ((tang quan) or (nang quan)) nhung cong tan toan ban*.