Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
thanh tung » thanh cong
phap thong » phap phong, phap chong, pho thong
thong cong » trong cong, tong cong, thong thong
doi chieu » doc hieu, doi chi, ho chieu
cong tan » cong tac, cong san, cong thanh
tan van » tran van, tang van, 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: doi chieu tinh - ((thanh trung) or (thanh tung)) phap thong cong tan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu tinh - ((thanh trung) OR (thanh tung)) phap thong cong tan van ban.
• Adding a wildcard symbol may retrieve word variants: doi chieu tinh - ((thanh trung) or (thanh tung)) phap thong cong tan van ban*.