Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu sang » chieu sang, thieu khang, thieu quang
manh trung » manh tung, manh hung, sinh trung
khong mong » khong xuong, khong trong, thong muong
khong dong » khong dung, phong dong, thong dong
hoc thieu » toc thieu, hoc hien
anh toan » manh toan, anh tuan, thanh toan
toan ban » van ban

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - ((thanh trung) OR (manh trung)) hua ((khong mong) OR (khong dong)) anh toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sang - ((thanh trung) or (manh trung)) hua ((khong mong) OR (khong dong)) anh toan ban~".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - ((thanh trung) or (manh trung)) hua ((khong mong) OR (khong dong)) anh toan ban*.