Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
ve triet » va trien, su triet
te sach » toc sach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va cham » va chat, va tham
xuc van » luc van, xuc ban, thuc van
duc van » duc va, duc tan, duc manh
v nang » va nang, vu nang, van nang
vi ve » va ve, gi ve, ve ve

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) OR (duc van)) hanh vi ve 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) OR (duc van)) hanh vi ve 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) OR (duc van)) hanh vi ve triet".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (te sach)) v nang xa hoi. hieu va cham ((xuc van) OR (duc van)) hanh vi ve triet*.