Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
te sach » toc sach
nang xa » nang x, lang xa, nang ma
hieu va » hieu qua
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
xuc va » duc va, tuc va, luc va
do cua » doi cua, co cua, dong cua
de cua » le cua, te cua, dieu cua

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 (lieu va)) cam xuc va thanh ((do cua) OR (de cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach v nang xa hoi. ((hieu va) OR (lieu va)) cam xuc va thanh ((do cua) OR (de cua)) tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach v nang xa hoi. ((hieu va) or (lieu va)) cam xuc va thanh ((do cua) OR (de cua)) tre*".