Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
thanh toan » thanh hoa, thanh san, tinh toan
hanh tran » hanh trang, thanh tran, hanh tram
dang cong » dung cong
tran van » luan van
van dang » van dong, van dung, van nang
toan ban » van ban
ho lieu » co lieu, ho kieu, ho chieu
so lieu » so dieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho lieu) or (so lieu)) tinh - hanh tran van dang cong thanh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho lieu) OR (so lieu)) tinh - hanh tran van dang cong thanh toan ban.
• Adding a wildcard symbol may retrieve word variants: ((ho lieu) or (so lieu)) tinh - hanh tran van dang cong thanh toan ban*.