Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh hoan, doanh thanh
thieu tinh » trieu tinh, chieu tinh, lieu tinh
thien tinh » khien tinh, thien minh, tien tinh
luan dung » luan dong, luan hung, luan ung
lan dung » van dung, dan dung, lan hung
luat cau » luat dau, lua cau, luat cac

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((thieu tinh) OR (thien tinh)) - doanh doanh ((luan dung) or (lan dung)) cong trinh luat cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((thieu tinh) OR (thien tinh)) - doanh doanh ((luan dung) OR (lan dung)) cong trinh luat cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc ((thieu tinh) OR (thien tinh)) - doanh doanh ((luan dung) or (lan dung)) cong trinh luat cau".
• Adding a wildcard symbol may retrieve word variants: toc ((thieu tinh) OR (thien tinh)) - doanh doanh ((luan dung) or (lan dung)) cong trinh luat cau*.