Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
hanh may » hanh ma, hanh mau, hanh ngay
van hanh » van thanh, ban hanh, van anh
nang xa » lang xa, nang ma, mang xa
va chao » va cao, va chat, va cham
hieu va » lieu va, hieu qua
may va » may vi, day va
xu van » tu van, vu van, su van
tu sai » tu san, tu cai, tu lai
tu bai » tu ban, tu bat, te bai

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sai) OR (tu bai)) ky ((nang xa) OR (nang x)) hoi. hieu va chao xu van hanh may va triet~.
• Adding a wildcard symbol may retrieve word variants: ((tu sai) or (tu bai)) ky ((nang xa) or (nang x)) hoi. hieu va chao xu van hanh may va triet*.