Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
tranh chua » tranh cua, trinh chuan, tranh chap
duong cong » dung cong, luong cong, duong trong
hoc thieu » toc thieu, hoc hien
dong cung » dong chung, dong hung, dong cong
tang ban » tang bang, tiang ban, tang van
ban cau » bang cau, ban can, van 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 - canh tranh chua ((dong cung) or (duong cong)) tang ban cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - canh tranh chua ((dong cung) OR (duong cong)) tang ban cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - canh tranh chua ((dong cung) or (duong cong)) tang ban cau*.