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
bang cong » bang song, hang cong, dung cong
dang cong » dung cong
van thanh » ban thanh, van tuan
dan than » dan chan, ban than, van than

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