Perhaps you should try some spelling variations:
tinh phuong » trinh phuong, tinh huong, dinh phuong
phuong doan » phuong loan, phuong hoang, huong dan
hieu soat » hieu suat, hieu hoat, hieu luat
quang ban » quang binh, quang tuan, quang tran
kiem soat » kiem toan
doan van » doan va, hoang van, luan van
van hieu » cao hieu
kien hoa » dien hoa, tien hoa, kien ha
ban van » ban dan, ban va, tan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tinh phuong doan van hieu soat ) or ( tinh quang ban van ((kiem soat) or (kien hoa)) ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tinh phuong doan van hieu soat ) OR ( tinh quang ban van ((kiem soat) OR (kien hoa)) )).
• Adding a wildcard symbol may retrieve word variants: (( tinh phuong doan van hieu soat ) or ( tinh quang ban van ((kiem soat) or (kien hoa)) ))*.