Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
doi chieu » doc hieu, doi chi, ho chieu
cua nhung » va nhung
thi hieu » thi chieu, thi hien, thi dieu
anh tang » anh bang, anh dang, anh nang
tang cua » mang cua, hang cua, tang luan
cong tac » cong ty
tac khan » tac nhan, cac khoan, tac chuan
khan cap » khan ap, than cap, khoan cam

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 (((theo tieu) or (thi hieu)))) xanh - anh tang cua nhung cong tac khan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (((theo tieu) OR (thi hieu)))) xanh - anh tang cua nhung cong tac khan cap.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (((theo tieu) or (thi hieu)))) xanh - anh tang cua nhung cong tac khan cap*.