Perhaps you should try some spelling variations:
trong trang » trong tang, trong tieng, trong tan
manh trong » manh truong, anh trong, manh trung
trang dung » trung dung, tran dung, trong dung
hoc chieu » hoc thieu, ho chieu, hoc hien
dung cong » dung trong
cong tan » cong tac, cong san, cong thanh
tan luan » tang luan, toan luan, dan luan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc chieu) or (toc thieu)) tinh - manh trong trang dung cong tan luan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chieu) OR (toc thieu)) tinh - manh trong trang dung cong tan luan van.
• Adding a wildcard symbol may retrieve word variants: ((hoc chieu) or (toc thieu)) tinh - manh trong trang dung cong tan luan van*.