Perhaps you should try some spelling variations:
toan dinh » tran dinh, toan kinh, doan dinh
cac khien » cac chien, cac phien, cach thien
khien hoc » nhiet hoc, dien hoc
dinh cac » tinh cach, dinh chuc, dinh chau
bach xin » bach xuan, vac xin, bach dan
cac khoi » cac thoi, cac khoan, cach thoi
khoi hoc » khoa hoc, hoi hoc, phoi hoc
xin cac » tin cac, gian cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( thuat toan dinh cac khien hoc ) or ( vu bach xin cac khoi hoc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( thuat toan dinh cac khien hoc ) OR ( vu bach xin cac khoi hoc )).
• Adding a wildcard symbol may retrieve word variants: (( thuat toan dinh cac khien hoc ) or ( vu bach xin cac khoi hoc ))*.