Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
van hanh » van thanh, ban hanh, van anh
su triet » su viet, su tien, ve triet
nang xa » nang x, lang xa, nang ma
xuc van » duc van, luc van, vuc van
hanh va » hang va, hanh vi
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
va cao » va co, va dao, va bao

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach v nang xa hoi. hieu ((va cao) or (va cac)) xuc van hanh va su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach v nang xa hoi. hieu ((va cao) OR (va cac)) xuc van hanh va su triet.
• Adding a wildcard symbol may retrieve word variants: thu sach v nang xa hoi. hieu ((va cao) or (va cac)) xuc van hanh va su triet*.