Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hanh lai » hanh lam, hanh tai, thanh lap
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
lai cuu » lai cua, lai chau, lai cuoc
cuu tre » cua tre, cau tren, cau treo
va cam » va cham, va cac, va cao
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa

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 y ((nang x) or (lang xa)) hoi. hieu va cam ((xuc va) or (tuc va)) hanh lai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y ((nang x) OR (lang xa)) hoi. hieu va cam ((xuc va) OR (tuc va)) hanh lai cuu tre.
• Adding a wildcard symbol may retrieve word variants: thu sach y ((nang x) or (lang xa)) hoi. hieu va cam ((xuc va) or (tuc va)) hanh lai cuu tre*.