Perhaps you should try some spelling variations:
dang xay » dang van, van xay
van hanh » van thanh, ban hanh, van anh
hanh lai » hanh lam, hanh tai, thanh lap
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
xuc van » duc van, luc van, vuc van
lai cua » dai cua, hai cua, lai chau
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y ((nang xa) or (dang xay)) hoi. hieu ve cam xuc van hanh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y ((nang xa) OR (dang xay)) hoi. hieu ve cam xuc van hanh lai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach y ((nang xa) or (dang xay)) hoi. hieu ve cam xuc van hanh lai cua tre*.