Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
hanh tai » thanh tai, hang tai, han tai
chat tuc » chat xuc, luat tuc, chat huu
tu sach » thu sach, su sach, te sach
tai cua » thai cua, tai cuc, tri cua
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va
nang xa » lang xa, nang ma, mang xa
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 ty ((nang xa) or (nang x)) hoi. ((hieu ve) OR (hieu van)) chat tuc va hanh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty ((nang xa) OR (nang x)) hoi. ((hieu ve) OR (hieu van)) chat tuc va hanh tai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty ((nang xa) or (nang x)) hoi. ((hieu ve) OR (hieu van)) chat tuc va hanh tai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ty ((nang xa) or (nang x)) hoi. ((hieu ve) OR (hieu van)) chat tuc va hanh tai cua tre*.