Perhaps you should try some spelling variations:
thanh dung » thanh duong, thanh tung, thanh hung
doi chieu » doc hieu, doi chi, mot chieu
dung dung » ung dung, dung ung, dung dong
dung dat » dung va, dung tai
dat dung » dan dung, vat dung, da dung
van lap » van lam, dan lap, van dap
luan » quan, lan

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

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