Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
ban thanh » ban hanh, ban hang
cua triet » cua viet, va triet
thanh cho » thanh pho, thanh cha, thanh chu
su triet » su viet, su tien, ve triet
tu sach » thu sach, su sach, te sach
dan ban » van ban, can ban, dan ba
hac dan » nhac dan, hoc dan, cac dan
va hac » van hac, va khac, va cac
y nang » ky nang, ly nang, v nang
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (thuat sach)) y nang x hoi. lieu va hac dan ban thanh cho ((cua triet) OR (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thuat sach)) y nang x hoi. lieu va hac dan ban thanh cho ((cua triet) OR (su triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thuat sach)) y nang x hoi. lieu va hac dan ban thanh cho ((cua triet) OR (su triet))".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thuat sach)) y nang x hoi. lieu va hac dan ban thanh cho ((cua triet) OR (su triet))*.