Perhaps you should try some spelling variations:
dung cong » dung trong
chi xanh » chi anh, chi hanh, chieu xanh
chi danh » chi dan, chi anh, chi dinh
cong dap » cong dan, cong lap, cong da
dap dung » ap dung, dan dung, dap ung
cong tan » cong tac, cong san, cong thanh
tran ban » tranh ban, tran van, 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: doi ((chi xanh) or (chi danh)) - thanh cong dap dung cong tan tran ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chi xanh) OR (chi danh)) - thanh cong dap dung cong tan tran ban.
• Adding a wildcard symbol may retrieve word variants: doi ((chi xanh) or (chi danh)) - thanh cong dap dung cong tan tran ban*.