Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, truong thanh
tien manh » tien anh, tien thanh, tieng anh
toc tien » hoc tien, toc mien, toc stieng
trung va » truong va, trang va, trung tam
trung ha » trung hoc, trung tam, trung cap
cong tan » cong tac, cong san, cong ty
toan tap » toan ban

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

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