Perhaps you should try some spelling variations:
thien van » thi van
hoc truc » hoc thuc, hoc trung, hoc thuoc
hanh lai » hanh lam, hanh tai, thanh lap
tu cach » tu cac
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
van hoc » van hoa
truc va » thuc va, thuc vat, trung va
va hanh » van hanh, va thanh, va danh
lai cua » dai cua, hai cua, lai chau
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (su sach)) ky nang xa hoi. thien van hoc truc va hanh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (su sach)) ky nang xa hoi. thien van hoc truc va hanh lai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (su sach)) ky nang xa hoi. thien van hoc truc va hanh lai cua tre*.