Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
ve triet » va trien
van hanh » van thanh, ban hanh, van anh
cham xuc » cam xuc, chat xuc, cham soc
su triet » su viet, su tien
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
xuc van » duc van, luc van, vuc van
te sach » toc sach
va cham » va chat, va tham
v nang » va nang, vu nang, van nang

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)) v nang xa hoi. hieu va cham xuc van hanh vi ((ve triet) OR (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (te sach)) v nang xa hoi. hieu va cham xuc van hanh vi ((ve triet) OR (su triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) or (te sach)) v nang xa hoi. hieu va cham xuc van hanh vi ((ve triet) OR (su triet))".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (te sach)) v nang xa hoi. hieu va cham xuc van hanh vi ((ve triet) OR (su triet))*.