Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
hanh tranh » canh tranh, hanh trinh, hanh trang
hoac khong » hoa khong, hoc khong, hay khong
toan thang » toan thong, thanh thang, tran thanh
hoc thieu » toc thieu, hoc hien
hua khong » hoa khong, cua khong, phuc khong
tan than » tan thanh, tan tran, ban 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 ((hua khong) OR (hoac khong)) cong ((tan than) or (toan thang)) cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tinh - hanh tranh ((hua khong) OR (hoac khong)) cong ((tan than) OR (toan thang)) cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu tinh - hanh tranh ((hua khong) OR (hoac khong)) cong ((tan than) or (toan thang)) cap".
• Adding a wildcard symbol may retrieve word variants: hoc thieu tinh - hanh tranh ((hua khong) OR (hoac khong)) cong ((tan than) or (toan thang)) cap*.