Perhaps you should try some spelling variations:
trien hoat » tien hoa
tinh dung » trinh dung, tin dung, tinh quang
hieu suat » hieu luat, hieu qua
van quang » van quan, tran quang, van tuan
quang uan » quang tuan, quang ban, quang tran
kiem soat » kiem toan
van hieu » cao hieu
binh van » dinh van, binh dan, binh tan
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: (( tinh dung luan van hieu suat ) or ( binh van quang uan ((kiem soat) or (trien hoat)) ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tinh dung luan van hieu suat ) OR ( binh van quang uan ((kiem soat) OR (trien hoat)) )).
• Adding a wildcard symbol may retrieve word variants: (( tinh dung luan van hieu suat ) or ( binh van quang uan ((kiem soat) or (trien hoat)) ))*.