Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, nhung don
tranh cua » doanh cua, manh cua
hang cong » dang cong, hang nong, bang cong
chi xanh » chi anh, chi danh, chi hanh
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap
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 - canh tranh cua ((((nhung cong) OR (hang cong))) or (dung trong)) dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi xanh - canh tranh cua ((((nhung cong) OR (hang cong))) OR (dung trong)) dan than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chi xanh - canh tranh cua ((((nhung cong) OR (hang cong))) or (dung trong)) dan than cau".
• Adding a wildcard symbol may retrieve word variants: doi chi xanh - canh tranh cua ((((nhung cong) OR (hang cong))) or (dung trong)) dan than cau*.