Perhaps you should try some spelling variations:
quang tuan » quang thanh, quan luan, quang cua
chien soat » thien hoat
sinh cong » minh cong, trinh cong, chinh cong
hieu soat » hieu suat, hieu hoat, hieu luat
van chien » van hien, van tien
van hieu » cao hieu
tuan van » tran van, tan van, quan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( ((sinh cong) or (minh hoang)) luan van hieu soat ) or ( tinh quang tuan van chien soat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( ((sinh cong) OR (minh hoang)) luan van hieu soat ) OR ( tinh quang tuan van chien soat )).
• Adding a wildcard symbol may retrieve word variants: (( ((sinh cong) or (minh hoang)) luan van hieu soat ) or ( tinh quang tuan van chien soat ))*.