Perhaps you should try some spelling variations:
hieu khien » dieu khien, hieu hien, tieu khien
khien canh » thien chanh, hien hanh, bien canh
ban thanh » ban hanh, ban hang
canh loc » van loc, canh tac, minh loc
su triet » su viet, su tien, ve triet
thanh vi » hanh vi, thanh va, thanh ve
cai phoi » cap phoi, cay phoi, chai thoi
loc ban » lo ban, hoc ban, coc ban
sac ke » sac ky, cac ke, mac ke
va cai » va cac, va bai, va dai
kien » bien, vien, tien

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sac ke) or (tac ke)) va cai phoi. hieu khien canh loc ban thanh vi ((su triet) or (su kien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sac ke) OR (tac ke)) va cai phoi. hieu khien canh loc ban thanh vi ((su triet) OR (su kien)).
• Adding a wildcard symbol may retrieve word variants: tu ((sac ke) or (tac ke)) va cai phoi. hieu khien canh loc ban thanh vi ((su triet) or (su kien))*.