Perhaps you should try some spelling variations:
chau tinh » cuu tinh, ha tinh, cua tinh
cong tan » cong san, cong thanh, cong ty
cong tac » cong ty
toan tap » toan ban
ho chau » ha chau, ho chu, o chau
tang ha » lang ha, tang ma, trung ha
dung ha » dung va, dung he, dung khoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chau tinh - manh ((tang ha) or (dung ha)) nhung ((cong tan) OR (cong tac)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chau tinh - manh ((tang ha) OR (dung ha)) nhung ((cong tan) OR (cong tac)) toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chau tinh - manh ((tang ha) or (dung ha)) nhung ((cong tan) OR (cong tac)) toan tap".
• Adding a wildcard symbol may retrieve word variants: ho chau tinh - manh ((tang ha) or (dung ha)) nhung ((cong tan) OR (cong tac)) toan tap*.