Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
doi chieu » doc hieu, ho chieu, mot chieu
thanh tra » thanh toan, thanh hoa
cong tan » cong tac, cong san, cong thanh
tan khan » tan khang, tan nhan, toan khoan
khan cap » khan ap, than cap, khoan cam
doi chi » doi khi

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 (doi chi)) sach - ((thanh tra) OR (thanh san)) toan thong cong tan khan cap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) OR (doi chi)) sach - ((thanh tra) OR (thanh san)) toan thong cong tan khan cap".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) OR (doi chi)) sach - ((thanh tra) OR (thanh san)) toan thong cong tan khan cap*.