Perhaps you should try some spelling variations:
hanh hai » thanh hai, nhanh hai, hang hai
ve cham » va cham, ve chat, vu cham
hai cua » thai cua, dai cua, hoi cua
tu sach » thu sach, su sach, te sach
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
luc va » duc va, loc 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: tu sach y ((nang x) or (lang xa)) hoi. hieu ve cham ((luc va) or (tuc va)) hanh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y ((nang x) OR (lang xa)) hoi. hieu ve cham ((luc va) OR (tuc va)) hanh hai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach y ((nang x) or (lang xa)) hoi. hieu ve cham ((luc va) or (tuc va)) hanh hai cua tre*.