Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
hanh trinh » canh tranh, hanh chinh
trong hanh » trong thanh, trong anh, trong canh
trong minh » truong minh, trong kinh, thong minh
hoc thieu » toc thieu, hoc hien
luat dung » suat dung, luat chung, luat quang
toan tai » toan tap, doanh tai, toan cao
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 luat dung ((trong hanh) or (trong minh)) ((toan tai) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - hanh trinh luat dung ((trong hanh) OR (trong minh)) ((toan tai) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - hanh trinh luat dung ((trong hanh) or (trong minh)) ((toan tai) or (toan ban))*.