Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
ban thanh » ban hanh, ban hang
te sach » toc sach
sach tu » sach thu, cach tu, sach ty
tu hanh » du hanh, lu hanh, thuc hanh
hanh xa » hanh va, hanh ma, hanh xu
hieu va » lieu va, hieu qua
cam duc » cam xuc, cao duc, nam duoc
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: te sach tu hanh xa hoi. hieu va ((cam duc) or (pham duc)) ban thanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach tu hanh xa hoi. hieu va ((cam duc) OR (pham duc)) ban thanh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach tu hanh xa hoi. hieu va ((cam duc) or (pham duc)) ban thanh dai cua tre*.