Perhaps you should try some spelling variations:
khoi thuat » ki thuat, hoc thuat
thuat mach » thuat sach, thuat tach, thuyet mach
trung quan » truong quan, trong quan, trung tuan
dung cong » dung trong
tung qua » dung qua, tuong quan, duong qua
cong tac » cong ty
tac nhan » tao nhan, cac nhan, dac nhan
nhan cao » nha cao, nhan tao, nhan co

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

• Performing a fuzzy search may retrieve terms with similar spellings: khoi thuat mach - thanh ((tung qua) or (trung quan)) dung cong tac nhan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: khoi thuat mach - thanh ((tung qua) OR (trung quan)) dung cong tac nhan cao.
• Adding a wildcard symbol may retrieve word variants: khoi thuat mach - thanh ((tung qua) or (trung quan)) dung cong tac nhan cao*.