Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
nham thuc » nhan thuc, nam thuc, nham thu
danh viet » anh viet, ninh viet, nang viet
doc sach » hoc sach, toc sach, nuoc sach
thuc van » thuc vat, thuc dan, thuc va
van danh » van doanh, van anh, van hanh
su triet » su viet, su tien, ve triet
nang xa » nang x, lang xa, nang ma
va nham » va cham, va tham, va nha
viet su » viet suu, viet sau, viet tu
y nang » ky nang, ly nang, v nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc sach) or (thuoc sach)) y nang xa hoi. lieu va nham thuc van danh viet su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc sach) OR (thuoc sach)) y nang xa hoi. lieu va nham thuc van danh viet su triet.
• Adding a wildcard symbol may retrieve word variants: ((doc sach) or (thuoc sach)) y nang xa hoi. lieu va nham thuc van danh viet su triet*.