Perhaps you should try some spelling variations:
hoc thieu » toc thieu, hoc hien
doi chieu » doc hieu, doi chi, mot chieu
anh duong » canh duong, anh huong, anh dong
dung cong » dung trong
ho chieu » theo chieu, mot chieu, thi chieu
qua dung » quang dung, su dung, qua song
cong tac » cong ty
tac than » tac thanh, tam than, tac nhan
than cau » toan cau, phan cau, than cap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (((doi chieu) OR (ho chieu)))) sang - anh duong qua dung cong tac than cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (((doi chieu) OR (ho chieu)))) sang - anh duong qua dung cong tac than cau~".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (((doi chieu) OR (ho chieu)))) sang - anh duong qua dung cong tac than cau*.