Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
cua thong » cua thuong, cua khong, cua tong
doi chieu » doc hieu, ho chieu, mot chieu
toan ban » van ban
cong tan » cong tac, cong san, cong thanh
tan phan » toan phan, than phan, van phan
doi chi » doi khi
can ban » van ban

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)) xanh - ((can ban) or (toan ban)) cua thong cong tan phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (doi chi)) xanh - ((can ban) OR (toan ban)) cua thong cong tan phan tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) OR (doi chi)) xanh - ((can ban) or (toan ban)) cua thong cong tan phan tu".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) OR (doi chi)) xanh - ((can ban) or (toan ban)) cua thong cong tan phan tu*.