Perhaps you should try some spelling variations:
va trien » va truyen, va thiet, va tuyen
hieu van » hieu va, thien van, lieu va
va triet » va thiet, ve triet, cua triet
hanh sua » hinh su, hanh tu, ban sua
van cam » van nam, van lam, van cau
cam loc » cam lo
hanh va » hang va, hanh vi
su sach » so sach, vu sach
loc va » hoc va, luc va
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: su sach y nang x hoi. hieu van cam loc va ((hanh sua) or (hanh va)) ((va triet) OR (va trien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang x hoi. hieu van cam loc va ((hanh sua) OR (hanh va)) ((va triet) OR (va trien)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang x hoi. hieu van cam loc va ((hanh sua) or (hanh va)) ((va triet) OR (va trien))".
• Adding a wildcard symbol may retrieve word variants: su sach y nang x hoi. hieu van cam loc va ((hanh sua) or (hanh va)) ((va triet) OR (va trien))*.