Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
hanh tranh » canh tranh, hanh trinh, hanh trang
hoc thieu » toc thieu, hoc hien
tranh cua » doanh cua, manh cua
cong nong » cong cong, cong trong, cong luong
son thanh » ban thanh, van thanh
thanh lap » thanh san, phan lap, thanh hai

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 sang - hanh tranh cua ((cong nong) or (cong dong)) son thanh lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - hanh tranh cua ((cong nong) OR (cong dong)) son thanh lap.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - hanh tranh cua ((cong nong) or (cong dong)) son thanh lap*.