Perhaps you should try some spelling variations:
nham thuc » nhan thuc, nam thuc, nham thu
ninh viet » sinh vien, anh viet
cua triet » cua viet, su triet, va triet
hoc sach » hoc sinh, hoc cac, hoc anh
toc sach » doc sach, thuoc sach, nuoc sach
viet cua » viec cua, viet ca, viet qua
nang xa » nang x, lang xa, nang ma
va nham » va cham, va tham, va nha
thuc va » thuc vat, thuc dan, thuc day
va ninh » van ninh, va kinh, va tinh
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: ((hoc sach) or (toc sach)) y nang xa hoi. lieu va nham thuc va ninh viet cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc sach) OR (toc sach)) y nang xa hoi. lieu va nham thuc va ninh viet cua triet.
• Adding a wildcard symbol may retrieve word variants: ((hoc sach) or (toc sach)) y nang xa hoi. lieu va nham thuc va ninh viet cua triet*.