Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
hanh trinh » canh tranh, hanh chinh
hoc thieu » toc thieu, hoc hien
trinh qua » trinh quan, trinh cua, trinh quang
qua nhung » quan nhung, cua nhung, qua chung
cong san » cong tac
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 trinh qua nhung ((huong dan) or (cong san)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - hanh trinh qua nhung ((huong dan) OR (cong san)) toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - hanh trinh qua nhung ((huong dan) or (cong san)) toan ban*.