Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va
xuc van » duc van, luc van, vuc van
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
vi va » vi van, vai va, bi va
vu va » vu van, tu va, su va

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

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