Perhaps you should try some spelling variations:
phat duc » pham duc, phan duc, phan duoc
hanh vai » hanh vi, hanh va, hanh tai
ban hanh » ban hang
su sach » so sach, vu sach
cua tre » cuu tre, cua triet, dua tren
duc ban » duc tan, duc van, dua ban
hieu va » lieu va, hieu qua
sach ty » sach y, sach tu, sach thu
lang xa » lang ha, dang xay, lang van
dang xa » dang xay, dang ha, dang va
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: su sach ty ((dang xa) OR (lang xa)) hoi. hieu va phat duc ban hanh vai ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty ((dang xa) OR (lang xa)) hoi. hieu va phat duc ban hanh vai ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty ((dang xa) OR (lang xa)) hoi. hieu va phat duc ban hanh vai ((cua tre) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: su sach ty ((dang xa) OR (lang xa)) hoi. hieu va phat duc ban hanh vai ((cua tre) or (cua te))*.