Perhaps you should try some spelling variations:
phung cuong » phung cong, phuong duong, phuong luong
hung cuong » hung vuong, hong cuong, hung luong
hoc thieu » toc thieu, hoc hien
hanh tran » hanh trang, thanh tran, hanh tram
ho chieu » theo chieu, doi chieu, mot chieu
tran van » luan van
ban than » ban thanh, van thanh, ban hang
than ban » thanh ban, toan ban, than man

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: ((ho chieu) OR (hoc thieu)) tinh - hanh tran van ((hung cuong) OR (phung cuong)) ban than ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (hoc thieu)) tinh - hanh tran van ((hung cuong) or (phung cuong)) ban than ban~".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (hoc thieu)) tinh - hanh tran van ((hung cuong) or (phung cuong)) ban than ban*.