Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
thieu sang » chieu sang, thieu khang, thieu quang
hanh tranh » hanh trang, lanh tranh, nhanh thanh
hanh trinh » hanh chinh
hoc thieu » toc thieu, hoc hien
cong van » cong vang, cong san, song van
van toan » van tuan, van tan, van thanh
toan ban » van ban

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