Perhaps you should try some spelling variations:
thanh do » thanh de, thanh hoa, thanh loi
xang xa » lang xa, mang xa, ang xa
hieu ve » hieu va, hieu van
sach ty » sach tu, sach thu, xach tay
cac luc » cau luc, coc luc, cac nuoc
ve cac » va cac, vien cac
luc va » duc va, tuc va, loc va
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: so ((sach ty) OR (sach y)) xang xa hoi. hieu ve cac luc va ((thanh do) or (thanh pho)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so ((sach ty) OR (sach y)) xang xa hoi. hieu ve cac luc va ((thanh do) OR (thanh pho)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so ((sach ty) OR (sach y)) xang xa hoi. hieu ve cac luc va ((thanh do) or (thanh pho)) cua te".
• Adding a wildcard symbol may retrieve word variants: so ((sach ty) OR (sach y)) xang xa hoi. hieu ve cac luc va ((thanh do) or (thanh pho)) cua te*.