Perhaps you should try some spelling variations:
hanh lai » hanh lam, hanh tai, thanh lap
dang xay » dang van, van xay
so sach » so sanh, bo sach, co sach
ve cham » va cham, ve chat, vu cham
lai cua » dai cua, hai cua, lai chau
hoc van » hoc dan, hoc va, hoc vat
soc van » oc van, sac van, soc dan
hieu ve » hieu va, hieu van
sach ty » sach y, sach tu, sach thu
nang xa » nang x, lang xa, nang ma
cua te » cua tu

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

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