Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
thanh toan » thanh hoa, tinh toan
hien sach » dien sach, kien sach, thien hach
hanh tram » hanh tam, hanh trang, thanh tran
van nhung » van nhuong, va nhung, van hung
tram van » tran van, tam van, trang van

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien sach - hanh tram van nhung cong ((thanh toan) OR (thanh san)) cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien sach - hanh tram van nhung cong ((thanh toan) OR (thanh san)) cao".
• Adding a wildcard symbol may retrieve word variants: hoc hien sach - hanh tram van nhung cong ((thanh toan) OR (thanh san)) cao*.