Perhaps you should try some spelling variations:
thanh tung » thanh cong
cong thanh » dong thanh, cong trinh, truong thanh
chi xanh » chi anh, chi danh, chi hanh
tung cap » trung cap, cung cap, thong cap
cap dung » ap dung, cao dung, chan dung
cong tan » cong tac, cong san, cong ty
toan ban » van ban
doi chi » doi khi

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 cap dung ((cong tan) OR (cong thanh)) ((toan tap) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi xanh - thanh tung cap dung ((cong tan) OR (cong thanh)) ((toan tap) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chi xanh - thanh tung cap dung ((cong tan) OR (cong thanh)) ((toan tap) or (toan ban))".
• Adding a wildcard symbol may retrieve word variants: doi chi xanh - thanh tung cap dung ((cong tan) OR (cong thanh)) ((toan tap) or (toan ban))*.