Perhaps you should try some spelling variations:
van chat » cao chat
hieu van » hieu va, thien van, lieu va
hanh hai » thanh hai, nhanh hai, hang hai
hai cua » thai cua, dai cua, hoi cua
truc va » thuc va, trung va
sach ty » sach y, sach tu, sach thu
lang xa » lang ha, dang xay, lang van
cua tre » cua te, cuu tre, cua triet
sac ky » cac ky, sai ky

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 ty) or (sac ky)) lang xa hoi. hieu van chat ((truc va) or (thuc vat)) hanh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sac ky)) lang xa hoi. hieu van chat ((truc va) OR (thuc vat)) hanh hai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) or (sac ky)) lang xa hoi. hieu van chat ((truc va) or (thuc vat)) hanh hai cua tre*.