Perhaps you should try some spelling variations:
thanh tung » thanh cong
nhung cong » dung cong, thong cong, nhung don
lieu tinh » trieu tinh, diep tinh, bien tinh
hang cong » dang cong, hang nong, bang cong
doi lieu » duoc lieu, doi chieu, du lieu
dan than » dan chan, ban than, van than
van tuan » van quan, van ban, anh tuan
tung va » trung va, tuong va, dung va

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

• If you are trying to use Boolean operators, they must be ALL CAPS: doi lieu tinh - thanh tung va ((nhung cong) OR (hang cong)) ((dan than) OR (van tuan)) cao~.
• Adding a wildcard symbol may retrieve word variants: doi lieu tinh - thanh tung va ((nhung cong) or (hang cong)) ((dan than) or (van tuan)) cao*.