Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
duoc thien » duc thien, duoc dien, cuoc chien
minh trang » tinh trang, minh hoang, minh tuan
dang trong » dung trong, dong trong, lang trong
trong san » trong cac, cong san, dong san
cua dang » cua cong, cua ban
san van » tan van, luan van, tran van

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

• Performing a fuzzy search may retrieve terms with similar spellings: duoc thien thanh - ((minh trang) or (canh tranh)) cua dang trong san van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: duoc thien thanh - ((minh trang) OR (canh tranh)) cua dang trong san van ban.
• Adding a wildcard symbol may retrieve word variants: duoc thien thanh - ((minh trang) or (canh tranh)) cua dang trong san van ban*.