Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
lanh tranh » canh tranh, lan tranh, sach tranh
hanh trinh » canh tranh, hanh chinh
hoc thieu » toc thieu, hoc hien
va truong » van truong, xa truong, va thuong
cong san » cong tac
song van » hoang van, trong van, duong van

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 - ((lanh tranh) or (hanh trinh)) va truong ((cong san) or (song van)) van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - ((lanh tranh) OR (hanh trinh)) va truong ((cong san) OR (song van)) van ban.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - ((lanh tranh) or (hanh trinh)) va truong ((cong san) or (song van)) van ban*.