Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hien sang » hien trang, khien bang, chieu sang
lan tranh » lanh tranh, luan tranh, can tranh
hoang van » hang va
va trong » va truong, va thong, va tuong
cong tan » cong tac, cong san, cong 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 hien sang - ((lan tranh) or (hanh trinh)) va trong ((cong tan) or (hoang van)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien sang - ((lan tranh) OR (hanh trinh)) va trong ((cong tan) OR (hoang van)) toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc hien sang - ((lan tranh) or (hanh trinh)) va trong ((cong tan) or (hoang van)) toan ban*.