Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
chua tre » chua tri, cua tre, chua trieu
nang xa » nang x, lang xa, nang ma
sach ty » sach y, sach tu, sach thu
va chua » vua chua, ca chua, va chu
hanh va » hang va, hanh vi
hieu ve » hieu va, hieu van
tang ma » mang may, tang van
xac va » tac va, ac va, bac va
tuc va » thuc va, truc va, tuc xa
ve cam » ve cham, ve cac, va cam

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 (tang ma)) hoi. hieu ve cam ((xac va) or (tuc va)) hanh va chua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty ((nang xa) OR (tang ma)) hoi. hieu ve cam ((xac va) OR (tuc va)) hanh va chua tre.
• Adding a wildcard symbol may retrieve word variants: thu sach ty ((nang xa) or (tang ma)) hoi. hieu ve cam ((xac va) or (tuc va)) hanh va chua tre*.