Perhaps you should try some spelling variations:
thanh thang » nhanh thang, thanh thanh, thanh hang
thieu tach » chiet tach, chieu sach, hieu cach
thien hach » thien thanh, hien hanh
thang va » hang va, trang va, thong va
va thong » va thuong, va phuong, he thong
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac

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)) - thanh thang va thong ((cong tan) or (cong san)) thanh san~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu tach) OR (thien hach)) - thanh thang va thong ((cong tan) OR (cong san)) thanh san.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu tach) OR (thien hach)) - thanh thang va thong ((cong tan) or (cong san)) thanh san".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu tach) OR (thien hach)) - thanh thang va thong ((cong tan) or (cong san)) thanh san*.