Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
van hanh » van thanh, ban hanh, van anh
cham xuc » cam xuc, chat xuc, cham soc
va trien » va truyen, va thiet, va tuyen
toc sach » hoc sach, doc sach, thuoc sach
hieu va » lieu va, hieu qua
va cham » va chat, va tham
xuc van » duc van, luc van, vuc van
nang xa » nang x, lang xa, nang ma
v nang » va nang, vu nang, van nang
vi va » vi van, vai va, vu va

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) or (te sach))) or (toc sach)) v nang xa hoi. hieu va cham xuc van hanh vi va trien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((thu sach) OR (te sach))) OR (toc sach)) v nang xa hoi. hieu va cham xuc van hanh vi va trien.
• Adding a wildcard symbol may retrieve word variants: ((((thu sach) or (te sach))) or (toc sach)) v nang xa hoi. hieu va cham xuc van hanh vi va trien*.