Perhaps you should try some spelling variations:
hoc thieu » toc thieu, hoc hien
hanh dong » anh dong, ha dong
dong dung » dong duong, duong dung, cong dung
dung dung » ung dung, dung ung, dung dong
dung cong » dung trong
ho chieu » theo chieu, mot chieu, doi chieu
tran van » luan van
tan van » tang van, luan van, dang van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (hoc thieu)) xanh - hanh dong dung dung cong ((tan van) or (tran van)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) xanh - hanh dong dung dung cong ((tan van) OR (tran van)) ban.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc thieu)) xanh - hanh dong dung dung cong ((tan van) or (tran van)) ban*.