Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
hanh tranh » canh tranh, hanh trinh, hanh trang
hoc thieu » toc thieu, hoc hien
tranh cua » doanh cua, manh cua
hang cong » hang nong, bang cong, thanh cong
dang cong » dung cong
san cau » ban cau, can cau, ran cau
van cau » van dau, van hau, van chat

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu tinh - hanh tranh cua ((hang cong) OR (dang cong)) thanh ((san cau) or (van cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tinh - hanh tranh cua ((hang cong) OR (dang cong)) thanh ((san cau) OR (van cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu tinh - hanh tranh cua ((hang cong) OR (dang cong)) thanh ((san cau) or (van cau))".
• Adding a wildcard symbol may retrieve word variants: hoc thieu tinh - hanh tranh cua ((hang cong) OR (dang cong)) thanh ((san cau) or (van cau))*.