Perhaps you should try some spelling variations:
thieu tach » chiet tach, chieu sach, hieu cach
thien hach » thien thanh, hien hanh
nhung cong » dung cong, thong cong, hang cong
thang cua » thong cua, hang cua, than cua
tranh cua » doanh cua, manh cua
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: hoc ((thieu tach) OR (thien hach)) - hanh ((thang cua) or (tranh cua)) nhung cong tan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu tach) OR (thien hach)) - hanh ((thang cua) OR (tranh cua)) nhung cong tan toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu tach) OR (thien hach)) - hanh ((thang cua) or (tranh cua)) nhung cong tan toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu tach) OR (thien hach)) - hanh ((thang cua) or (tranh cua)) nhung cong tan toan ban*.