Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
cong thanh » dong thanh, cong trinh, cong tan
thanh toan » thanh hoa, thanh san, tinh toan
bien tinh » bi tinh, yen tinh, diep tinh
trung dap » trung cap, trung dam, trung lap
trung dai » truong dai, truong dao, trung tam
doi bien » doi dien, voi bien, doi hien
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi bien tinh - manh ((trung dap) or (trung dai)) nhung cong thanh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi bien tinh - manh ((trung dap) OR (trung dai)) nhung cong thanh toan ban*.