Perhaps you should try some spelling variations:
thanh dung » thanh duong, thanh tung, thanh hung
doc hieu » toc thieu, hoc thieu
dung tay » dung tai, dung may, vung tay
tay dung » xay dung, tac dung, tay nung
cong tap » cuong tap, cong tan, tong tap
cong tac » cong ty
toan 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: ((doc hieu) or (hoc hien)) xanh - thanh dung tay dung ((cong tap) OR (cong tac)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (hoc hien)) xanh - thanh dung tay dung ((cong tap) OR (cong tac)) toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc hieu) or (hoc hien)) xanh - thanh dung tay dung ((cong tap) OR (cong tac)) toan ban".
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (hoc hien)) xanh - thanh dung tay dung ((cong tap) OR (cong tac)) toan ban*.