Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
lam thuoc » nam thuoc, am thuc, cay thuoc
lam truoc » nam truoc, lam truong, nam thuoc
vu sach » vu bach, vu khach
nang xa » nang x, lang xa, nang ma
dao vai » dao van, dao va, dao bai
vai cua » dai cua, hai cua, lai cua
su sach » so sach
y nang » ky nang, ly nang, v nang
va dao » ca dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (vu sach)) y nang xa hoi. lieu va ((lam truoc) OR (lam thuoc)) va dao vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) y nang xa hoi. lieu va ((lam truoc) OR (lam thuoc)) va dao vai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (vu sach)) y nang xa hoi. lieu va ((lam truoc) OR (lam thuoc)) va dao vai cua triet".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu sach)) y nang xa hoi. lieu va ((lam truoc) OR (lam thuoc)) va dao vai cua triet*.