Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hanh tai » thanh tai, hang tai, han tai
hanh lai » hanh lam, thanh lap, thanh loi
hieu van » hieu va, thien van, lieu va
chau tre » chay tren, chau tho, cho tre
nang ma » tang ma, sang ma, nang cao
sach ty » sach y, sach tu, sach thu
cam duc » cam xuc, cao duc, pham duc
duc van » duc va, duc tan, duc manh
nang xa » nang x, lang xa, mang xa
van cam » van nam, van lam, van cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ty ((nang xa) or (nang ma)) hoi. hieu van cam duc van ((hanh lai) or (hanh tai)) chau tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty ((nang xa) OR (nang ma)) hoi. hieu van cam duc van ((hanh lai) OR (hanh tai)) chau tre.
• Adding a wildcard symbol may retrieve word variants: thu sach ty ((nang xa) or (nang ma)) hoi. hieu van cam duc van ((hanh lai) or (hanh tai)) chau tre*.