Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
xang tao » sang tao, nang tao, vang tao
phan dau » phan tu, hang dau
sach ty » sach y, sach tu, sach thu
tao hoi » tao khoi, tao boi, tay hoi
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ty xang tao hoi. hieu ve pham duc va ((phan lap) or (phan dau)) ((cua te) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ty xang tao hoi. hieu ve pham duc va ((phan lap) OR (phan dau)) ((cua te) OR (cua tu)).
• Adding a wildcard symbol may retrieve word variants: toc sach ty xang tao hoi. hieu ve pham duc va ((phan lap) or (phan dau)) ((cua te) or (cua tu))*.