Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
thanh tung » thanh cong
tham nhung » thi nhung
hoc thieu » toc thieu, hoc hien
tung tham » tuong tham, tung pham, cung tham
cong san » cong tac
chan cau » phan cau, can cau, chinh cau

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 - thanh tung tham nhung ((cong dong) or (cong san)) chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - thanh tung tham nhung ((cong dong) OR (cong san)) chan cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - thanh tung tham nhung ((cong dong) or (cong san)) chan cau*.