Perhaps you should try some spelling variations:
pham cuc » pham chuc, pham cua, pham thuc
hanh vai » hanh vi, hanh va, hanh tai
ban hanh » ban hang
hieu van » hieu va, thien van, lieu va
vai cua » dai cua, hai cua, lai cua
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
dang xa » dang xay, lang xa, dang ha
cua tre » cua te, cuu tre, cua triet

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 ky ((dang xa) or (van xay)) hoi. hieu van ((pham cuc) OR (pham duc)) ban hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((dang xa) OR (van xay)) hoi. hieu van ((pham cuc) OR (pham duc)) ban hanh vai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky ((dang xa) or (van xay)) hoi. hieu van ((pham cuc) OR (pham duc)) ban hanh vai cua tre*".