Perhaps you should try some spelling variations:
nang tao » nang cao, sang tao, nang tai
tao khoi » tao hoi, thao khoa, lao khoa
hanh lai » hanh lam, hanh tai, thanh lap
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
hieu su » hieu sau, tieu su, hieu so
su cham » su pham, tu cham, vu cham
lai cua » dai cua, hai cua, lai chau
cua tre » cua te, cuu tre, cua triet
soc va » loc va, doc va, goc va

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 sach ty nang tao khoi. hieu su cham ((soc va) OR (hoc va)) hanh lai cua tre~.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang tao khoi. hieu su cham ((soc va) or (hoc va)) hanh lai cua tre*.