Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van hanh » van thanh, ban hanh, van anh
su triet » su viet, su tien, ve triet
te sach » toc sach
van dam » van nam, van dao, van dau
dam tu » nam tu, cam tu, tam tu
tu van » tu va
x hoi » xa hoi, o hoi, x ho
vi su » va su, ve su, ki su

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) or (hoc sinh)) ky nang x hoi. hieu van dam tu van hanh vi su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (hoc sinh)) ky nang x hoi. hieu van dam tu van hanh vi su triet.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (hoc sinh)) ky nang x hoi. hieu van dam tu van hanh vi su triet*.