Perhaps you should try some spelling variations:
thanh ve » hanh ve, thanh va, thanh vien
xa thanh » va thanh, ha thanh, ta thanh
vu sach » vu bach, su sach, vu khach
sach ty » sach y, sach tu, sach thu
hieu va » hieu qua
ve cua » le cua, de cua, te cua
nam tu » nam thu, nam thuc
cua te » cua tu
o hoi » co hoi, o hoc, o hai
tu xa » tu xay, tu va, te xa
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: vu sach ty xang ((x hoi) OR (o hoi)). ((hieu va) or (lieu va)) nam tu xa thanh ve cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ty xang ((x hoi) OR (o hoi)). ((hieu va) OR (lieu va)) nam tu xa thanh ve cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ty xang ((x hoi) OR (o hoi)). ((hieu va) or (lieu va)) nam tu xa thanh ve cua te".
• Adding a wildcard symbol may retrieve word variants: vu sach ty xang ((x hoi) OR (o hoi)). ((hieu va) or (lieu va)) nam tu xa thanh ve cua te*.