Perhaps you should try some spelling variations:
ve triet » va trien, su triet
ban hanh » ban hang
hoc sach » hoc sinh, hoc cac, hoc anh
van hanh » van thanh, van anh, van ban
cham xuc » cam xuc, chat xuc, cham soc
va cham » va chat, va tham
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
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: ((tu sach) or (hoc sach)) v nang xa hoi. hieu va cham xuc ((van hanh) OR (ban hanh)) vi ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (hoc sach)) v nang xa hoi. hieu va cham xuc ((van hanh) OR (ban hanh)) vi ve triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (hoc sach)) v nang xa hoi. hieu va cham xuc ((van hanh) OR (ban hanh)) vi ve triet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (hoc sach)) v nang xa hoi. hieu va cham xuc ((van hanh) OR (ban hanh)) vi ve triet*.