Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
giau cua » gian cua, gia cua, dieu cua
pham duy » pham duc
va hanh » van hanh, va thanh, va danh
sach ty » sach y, sach tu, sach thu
hieu vu » hieu va, hieu ve, hieu su
vu pham » su pham, vi pham, vu kham
tang xa » trang xa, lang xa, tang ha
tang ma » mang may, tang van
cua tre » cua te, cuu tre, cua triet
va dan » ca dan, va dao, va dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ty ((tang xa) or (tang ma)) hoi. hieu vu pham duy ((va hanh) or (va dan)) giau cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty ((tang xa) OR (tang ma)) hoi. hieu vu pham duy ((va hanh) OR (va dan)) giau cua tre.
• Adding a wildcard symbol may retrieve word variants: thu sach ty ((tang xa) or (tang ma)) hoi. hieu vu pham duy ((va hanh) or (va dan)) giau cua tre*.