Perhaps you should try some spelling variations:
duong trong » dung trong
duong cong » dung cong, luong cong, trong cong
hanh doanh » hang doanh, chinh doanh, doanh doanh
doanh qua » doanh quan, doanh cua, danh qua
chi xanh » chi anh, chi hanh, chieu xanh
chi danh » chi dan, chi anh, chi dinh
dan thai » dang thai, dan thi, dan than
thai cao » tai cao, thoai cac, thuat cao

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)) - hanh doanh qua ((duong cong) or (duong trong)) dan thai cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chi xanh) OR (chi danh)) - hanh doanh qua ((duong cong) OR (duong trong)) dan thai cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chi xanh) OR (chi danh)) - hanh doanh qua ((duong cong) or (duong trong)) dan thai cao".
• Adding a wildcard symbol may retrieve word variants: doi ((chi xanh) OR (chi danh)) - hanh doanh qua ((duong cong) or (duong trong)) dan thai cao*.