Perhaps you should try some spelling variations:
lieu tinh » trieu tinh, diep tinh, bien tinh
manh tung » manh hung, thanh tung
tung chua » cung chua, cong chua, dung nhua
chua xang » chua nang, chuc nang, chu bang
xang cong » dang cong, bang cong, hang cong
doc lieu » duoc lieu, doc hieu, du lieu
cong van » cong vang, cong san, song van
tuan ban » tuan bang, toan ban, luan ban
luan han » luan hoan, luan phan, luan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc lieu tinh - manh tung chua xang cong van ((tuan ban) or (luan han))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc lieu tinh - manh tung chua xang cong van ((tuan ban) OR (luan han)).
• Adding a wildcard symbol may retrieve word variants: doc lieu tinh - manh tung chua xang cong van ((tuan ban) or (luan han))*.