Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
hoc thieu » toc thieu, hoc hien
cong tran » cong tan, cong tuan, cong toan
tran gian » tran giang, tran gia, trang giai
vat dung » van dung, viet dung, mat duong
va dung » van dung, va duong, va ung
gian tu » gian xu, gian thua, gian cua

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 ((va dung) or (vat dung)) cong tran gian tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - canh tranh ((va dung) OR (vat dung)) cong tran gian tu.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - canh tranh ((va dung) or (vat dung)) cong tran gian tu*.