Perhaps you should try some spelling variations:
canh manh » lanh manh, canh tranh, cach mang
hang cong » dang cong, hang nong, bang cong
tac chang » tac chong, cac chung, tac vang
chi xanh » chi anh, chi hanh, chieu xanh
chi danh » chi dan, chi anh, chi dinh
cong tac » cong ty
chang tu » chung tu, chang xu, hang tu
manh va » hanh va, anh va, minh va
va hang » van hang, va nang, va lang

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)) - canh manh va hang cong tac chang tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chi xanh) OR (chi danh)) - canh manh va hang cong tac chang tu.
• Adding a wildcard symbol may retrieve word variants: doi ((chi xanh) or (chi danh)) - canh manh va hang cong tac chang tu*.