Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
ban thanh » ban hanh, ban hang
cham coc » cham soc, kham cuoc, chat co
sang tay » sang tao, sang tai, bang tay
sang tac » sang tao, sang tai, sang than
tu sach » thu sach, su sach, te sach
cua tre » cuu tre, cua triet, dua tren
coc ban » co ban, cac ban, hoc ban
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
sach ty » sach y, sach tu, sach thu
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 ty ((sang tay) or (sang tac)) hoi. hieu ve cham coc ban thanh lap ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty ((sang tay) OR (sang tac)) hoi. hieu ve cham coc ban thanh lap ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: tu sach ty ((sang tay) or (sang tac)) hoi. hieu ve cham coc ban thanh lap ((cua tre) or (cua te))*.