Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
tranh quan » tranh quang, trinh quan, tranh luan
hoc thieu » toc thieu, hoc hien
hang cong » hang nong, bang cong, thanh cong
dang cong » dung cong
can cau » van cau, ca cau, cac cau
ban cau » bang cau, ban can, van cau

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 - canh tranh quan ((hang cong) OR (dang cong)) toan ((can cau) or (ban cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tinh - canh tranh quan ((hang cong) OR (dang cong)) toan ((can cau) OR (ban cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu tinh - canh tranh quan ((hang cong) OR (dang cong)) toan ((can cau) or (ban cau))".
• Adding a wildcard symbol may retrieve word variants: hoc thieu tinh - canh tranh quan ((hang cong) OR (dang cong)) toan ((can cau) or (ban cau))*.