Perhaps you should try some spelling variations:
luong quan » thong quan, duong qua
hieu soat » hieu suat, hieu hoat, kiem soat
hieu luat » hieu qua
tin luong » tien luong, tin huong, tin tuong
vien soat » kiem soat, bien soan, vien sau
quan cua » quan luan, ban cua, gian cua
cua vien » cua viet, cua bien, cua viec
luan » lan

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tin dung luan van ((hieu soat) OR (hieu luat)) ) or ( tin luong quan cua vien soat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tin dung luan van ((hieu soat) OR (hieu luat)) ) OR ( tin luong quan cua vien soat )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( tin dung luan van ((hieu soat) OR (hieu luat)) ) or ( tin luong quan cua vien soat ))".
• Adding a wildcard symbol may retrieve word variants: (( tin dung luan van ((hieu soat) OR (hieu luat)) ) or ( tin luong quan cua vien soat ))*.