Perhaps you should try some spelling variations:
hanh lai » hanh lam, hanh tai, thanh lap
hieu van » hieu va, thien van, lieu va
van cham » van chat, van tham, va cham
te sach » toc sach
lai cua » dai cua, hai cua, lai chau
cua tre » cua te, cuu tre, cua triet
cao hoi » cau hoi, co hoi, cao hoc
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
xac va » tac va, ac va, bac va
tuc va » thuc va, truc va, tuc xa
xuc va » duc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ty nang cao hoi. hieu van cham ((((xuc va) OR (xac va))) or (tuc va)) hanh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang cao hoi. hieu van cham ((((xuc va) OR (xac va))) OR (tuc va)) hanh lai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty nang cao hoi. hieu van cham ((((xuc va) OR (xac va))) or (tuc va)) hanh lai cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ty nang cao hoi. hieu van cham ((((xuc va) OR (xac va))) or (tuc va)) hanh lai cua tre*.