Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
phan lap » phan dau
sang tao » hang tai
tao khoi » tao hoi, thao khoa, lao khoa
ban phan » ban phap, van phan, ban than
cuu ban » cuu van, cua ban, cuu san
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va, hieu qua
cac cuu » cap cuu, cac cau, cac chu
ty sang » ty xang, ty hang, duy sang
cua cu » cua chu, cua cau, cua su

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) or (toc sach)) ty sang tao khoi. hieu va cac cuu ban phan lap ((cua tre) or (cua cu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ty sang tao khoi. hieu va cac cuu ban phan lap ((cua tre) OR (cua cu)).
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (toc sach)) ty sang tao khoi. hieu va cac cuu ban phan lap ((cua tre) or (cua cu))*.