Perhaps you should try some spelling variations:
hieu van » thien van, lieu va, hieu ve
hanh vai » hanh vi, hanh va, hanh tai
tu sach » thu sach, su sach, te sach
sach tu » sach thu, cach tu, sach ty
hieu va » lieu va, hieu qua
nam tuc » nam thuc, nam truc, nam tu
xa hanh » xa thanh, xa khanh, va hanh
cua tre » cuu tre, cua triet, dua tren
tu ang » tu lang, tu anc, tu anh
ang xa » lang xa, mang xa, dang xay
cua te » cua tu

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 tu ang xa hoi. ((hieu van) OR (hieu va)) nam tuc xa hanh vai ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tu ang xa hoi. ((hieu van) OR (hieu va)) nam tuc xa hanh vai ((cua tre) OR (cua te))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach tu ang xa hoi. ((hieu van) OR (hieu va)) nam tuc xa hanh vai ((cua tre) or (cua te))*".