Perhaps you should try some spelling variations:
thu nang » thi nang, thu hang, thu bang
hieu van » hieu va, thien van, lieu va
tan hanh » tan thanh, tang hanh, toan hanh
hanh lai » hanh lam, hanh tai, thanh lap
tu sach » thu sach, su sach, tu cach
te sach » toc sach
nang xa » nang x, lang xa, nang ma
van cam » van nam, van lam, van cau
cam duc » cam xuc, cao duc, pham duc
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 sach) or (te sach)) thu nang xa hoi. hieu van cam duc tan hanh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) thu nang xa hoi. hieu van cam duc tan hanh lai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) thu nang xa hoi. hieu van cam duc tan hanh lai cua tre*.