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 va » tranh van, trang va, trinh va
cong san » cong tac
cong tan » cong tac, cong thanh, cong ty
toan cau » toan cao, toan ban, toan tap

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 va nhung ((cong san) or (((cong tan) or (cong trinh)))) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tinh - hanh tranh va nhung ((cong san) OR (((cong tan) OR (cong trinh)))) toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu tinh - hanh tranh va nhung ((cong san) or (((cong tan) or (cong trinh)))) toan cau*.