Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
ban thanh » ban hanh, ban hang
thanh cap » thanh lap, hanh cap, than cap
anh tang » anh bang, anh nang, anh sang
anh dang » anh dong, anh dung, anh bang
va thong » va thuong, va phuong, he thong
cong ban » cong bang, cong san, cong tan
sinh va » sinh vat, tinh va

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((sinh va) OR (dinh van)) - ((anh tang) or (anh dang)) va thong cong ban thanh cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((sinh va) OR (dinh van)) - ((anh tang) OR (anh dang)) va thong cong ban thanh cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((sinh va) OR (dinh van)) - ((anh tang) or (anh dang)) va thong cong ban thanh cap".
• Adding a wildcard symbol may retrieve word variants: hoc ((sinh va) OR (dinh van)) - ((anh tang) or (anh dang)) va thong cong ban thanh cap*.