Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
va huong » va thuong, va phuong, va tuong
xa huong » xa phuong, xa muong, ga huong
cao tuc » dao tuc, cao duc, cao suc
doi cua » dai cua, hoi cua
co sach » cuon sach, hoc sach
hieu va » lieu va, hieu qua
bo sach » hoc sach
va cao » va cac, va co, va dao
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: ((co sach) OR (bo sach)) ky nang x hoi. hieu va cao tuc ((xa huong) or (va huong)) doi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((co sach) OR (bo sach)) ky nang x hoi. hieu va cao tuc ((xa huong) OR (va huong)) doi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((co sach) OR (bo sach)) ky nang x hoi. hieu va cao tuc ((xa huong) or (va huong)) doi cua triet".
• Adding a wildcard symbol may retrieve word variants: ((co sach) OR (bo sach)) ky nang x hoi. hieu va cao tuc ((xa huong) or (va huong)) doi cua triet*.