Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hau luoc » hau loc, khai luoc, muu luoc
toc sach » hoc sach, doc sach, thuoc sach
luoc van » luoc can, luoc va, luc van
hieu van » hieu va, thien van, lieu va
hanh ve » hanh vi, hanh va, hanh kem
hanh le » thanh le, hanh de, manh le
nang xa » nang x, lang xa, nang ma
vu nang » vuc nang, va nang, vu dang
van hau » van ha, van hai, van dau

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 (toc sach)) vu nang xa hoi. hieu van hau luoc van ((hanh le) or (hanh ve)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) vu nang xa hoi. hieu van hau luoc van ((hanh le) OR (hanh ve)) cua triet.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (toc sach)) vu nang xa hoi. hieu van hau luoc van ((hanh le) or (hanh ve)) cua triet*.