Perhaps you should try some spelling variations:
hanh lai » hanh lam, hanh tai, thanh lap
dang xay » dang van, van xay
van hanh » van thanh, ban hanh, van anh
nang xa » nang x, lang xa, nang ma
lai cua » dai cua, hai cua, lai chau
hieu vu » hieu va, hieu su, dieu vu
soc van » hoc van, oc van, sac van
hieu ve » hieu va, hieu van
so sac » so sach, so dac
cua te » cua tu
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sac ky ((nang xa) or (dang xay)) hoi. ((hieu vu) or (hieu ve)) cham soc van hanh lai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sac ky ((nang xa) OR (dang xay)) hoi. ((hieu vu) OR (hieu ve)) cham soc van hanh lai cua te.
• Adding a wildcard symbol may retrieve word variants: so sac ky ((nang xa) or (dang xay)) hoi. ((hieu vu) or (hieu ve)) cham soc van hanh lai cua te*.