Perhaps you should try some spelling variations:
thanh va » thanh van, thanh ha, thanh ve
te sach » toc sach
hanh va » hang va, hanh vi
sach ty » sach y, sach tu, sach thu
hieu va » lieu va, hieu qua
ty hang » ly hang, ty xang, thi hang
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, luc va
cua te » cua tu
o hoi » co hoi, o hoc, o hai
x hoi » xa hoi, x ho, 5 hoi

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 ty hang ((x hoi) OR (o hoi)). hieu va cam xuc va ((thanh va) or (hanh va)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty hang ((x hoi) OR (o hoi)). hieu va cam xuc va ((thanh va) OR (hanh va)) cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty hang ((x hoi) OR (o hoi)). hieu va cam xuc va ((thanh va) or (hanh va)) cua te*".