Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
vu sach » vu bach, su sach, vu khach
te sach » toc sach
va cham » va chat, va tham
hanh va » hang va, hanh vi
bac va » ban va, bac ha, bao va
luc va » duc va, tuc va, loc va
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: ((vu sach) or (te sach)) ky nang x hoi. lieu va cham ((bac va) or (luc va)) hanh va su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (te sach)) ky nang x hoi. lieu va cham ((bac va) OR (luc va)) hanh va su triet.
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (te sach)) ky nang x hoi. lieu va cham ((bac va) or (luc va)) hanh va su triet*.