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 tin » trinh tin, trang tin, thanh tinh
cong vang » cong lang, cong quang, cong ngang
thanh hai » thanh phan, thanh hoa, thanh san
thanh thu » thanh thuy, thanh tu, khanh thu
cong van » cong san, song van, cong tan

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 tin dung ((cong van) or (cong vang)) ((thanh hai) or (thanh thu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tinh - hanh tranh tin dung ((cong van) OR (cong vang)) ((thanh hai) OR (thanh thu)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu tinh - hanh tranh tin dung ((cong van) or (cong vang)) ((thanh hai) or (thanh thu))*.