Perhaps you should try some spelling variations:
doi chieu » doc hieu, doi chi, mot chieu
tinh than » tinh thanh, tinh toan, tinh thai
than tuan » thanh tuan, tran tuan, thanh xuan
tuan dang » tran dang, tuan bang, tuan dung
dang cong » dung cong
cong thi » cong thai, cong khi, dong thi
thi van » thi lan, thi hanh, thi nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) or (toc thieu)) sang - tinh than tuan dang cong thi van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (toc thieu)) sang - tinh than tuan dang cong thi van ban*.