Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
cua triet » cua viet, su triet, va triet
hoc sach » hoc sinh, hoc cac, hoc anh
hieu van » hieu va, thien van, lieu va
van chau » van chat, van cau, van hau
chau phu » chau phi, chau au, chau tho
danh dai » danh dau, danh di, danh sai
nang xa » nang x, lang xa, nang ma
va danh » va dinh, va dan, va hanh
y nang » ky nang, ly nang, v nang
phu va » phuc va, phu la, phu da

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 (thuat sach)) y nang xa hoi. hieu van chau phu va danh dai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc sach) OR (thuat sach)) y nang xa hoi. hieu van chau phu va danh dai cua triet.
• Adding a wildcard symbol may retrieve word variants: ((hoc sach) or (thuat sach)) y nang xa hoi. hieu van chau phu va danh dai cua triet*.