Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
hang tai » hang va, dung tai
phan lap » phan dau
voi pham » vi pham, toi pham, loai pham
hieu voi » hieu moi, lieu voi, hieu loi
hang tao » sang tao, nang tao, hang tap
sach ty » sach y, sach tu, sach thu
va phan » van phan, va phat, va phap
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 ((hang tao) OR (hang tai)) hoi. hieu voi pham duc va phan lap ((cua te) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ty ((hang tao) OR (hang tai)) hoi. hieu voi pham duc va phan lap ((cua te) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ty ((hang tao) OR (hang tai)) hoi. hieu voi pham duc va phan lap ((cua te) or (cua tu))".
• Adding a wildcard symbol may retrieve word variants: toc sach ty ((hang tao) OR (hang tai)) hoi. hieu voi pham duc va phan lap ((cua te) or (cua tu))*.