Perhaps you should try some spelling variations:
xa thanh » va thanh, ha thanh, ta thanh
thanh ly » thanh lay, thanh ky, thanh le
sach tu » sach thu, cach tu, sach uu
hieu va » hieu qua
sach ty » sach y, sach thu, xach tay
nam tu » nam thu, nam thuc
ly cua » le cua
cua te » cua tu
xang x » nang x
tu xa » tu xay, tu va, te xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: su ((sach ty) OR (sach tu)) xang x ho. ((hieu va) or (lieu va)) nam tu xa thanh ly cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ty) OR (sach tu)) xang x ho. ((hieu va) OR (lieu va)) nam tu xa thanh ly cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach ty) OR (sach tu)) xang x ho. ((hieu va) or (lieu va)) nam tu xa thanh ly cua te".
• Adding a wildcard symbol may retrieve word variants: su ((sach ty) OR (sach tu)) xang x ho. ((hieu va) or (lieu va)) nam tu xa thanh ly cua te*.