Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu sang » chieu sang, thieu khang, thieu quang
hoc thieu » toc thieu, hoc hien
tam thong » tam thuong, nam thong, tac thong
tao thong » tao trong, giao thong, toan thong
thong dan » thong van, tuong dan, thong den
dan chan » dan gian, dan ca, van chat
chan cac » phan cac, chon cac, nhan cach

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 trung ((tam thong) or (tao thong)) thong dan chan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - thanh trung ((tam thong) OR (tao thong)) thong dan chan cac.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - thanh trung ((tam thong) or (tao thong)) thong dan chan cac*.