Perhaps you should try some spelling variations:
thanh tung » thanh cong
chi xanh » chi anh, chi danh, chi hanh
cong ban » cong bang, cong san, cong dan
cong tan » cong tac, cong san, cong thanh
than tap » toan tap, han tap, phan tap
doi chi » doi khi
tung va » trung va, tuong va, dung va

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi xanh - thanh tung va nhung ((cong ban) OR (cong tan)) than tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chi xanh - thanh tung va nhung ((cong ban) OR (cong tan)) than tap".
• Adding a wildcard symbol may retrieve word variants: doi chi xanh - thanh tung va nhung ((cong ban) OR (cong tan)) than tap*.