Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
thanh dung » thanh duong, thanh tung, thanh hung
toc chieu » toc thieu, doc hieu, hoc thieu
dat quang » dau quang, chat quang, dang quang
luong van » luong va, duong van, luong vat
dung dat » dung va, dung tai
dang van » hoang van, hang va

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc chieu tinh - thanh dung dat quang ((dang van) or (luong van)) phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc chieu tinh - thanh dung dat quang ((dang van) OR (luong van)) phan tu.
• Adding a wildcard symbol may retrieve word variants: toc chieu tinh - thanh dung dat quang ((dang van) or (luong van)) phan tu*.