Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
pham duy » pham duc
danh vai » danh sai, danh va, doanh van
cua viet » ca viet, hoa viet, cua vat
sach ha » sach nha, sach han, sach xa
nang xa » nang x, nang ma, mang xa
lang xa » lang ha, dang xay, lang van
hieu vu » hieu va, hieu ve, hieu su
vu pham » su pham, vi pham, vu kham
va danh » va dinh, va dan, va hanh
vai cua » dai cua, hai cua, lai cua
duy va » duy vat, duy van, day va

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 ha ((nang xa) or (lang xa)) hoi. hieu vu pham duy va danh vai cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ha ((nang xa) OR (lang xa)) hoi. hieu vu pham duy va danh vai cua viet.
• Adding a wildcard symbol may retrieve word variants: thu sach ha ((nang xa) or (lang xa)) hoi. hieu vu pham duy va danh vai cua viet*.