Perhaps you should try some spelling variations:
sach thu » sach thue, sach thieu, sach tham
doanh va » doan va, doanh cua, hanh va
hieu van » hieu va, thien van, lieu va
te sach » toc sach
van cam » van nam, van lam, van cau
bang xa » bang va, mang xa, ang xa
lang xa » lang ha, dang xay, lang van
cua tre » cua te, cuu tre, cua triet
cam lo » nam lo, cam ly, cam o
lo va » lo van, lao va, ly va

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 thu ((bang xa) or (lang xa)) hoi. hieu van cam lo va ((doanh va) OR (doanh tai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thu ((bang xa) OR (lang xa)) hoi. hieu van cam lo va ((doanh va) OR (doanh tai)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach thu ((bang xa) or (lang xa)) hoi. hieu van cam lo va ((doanh va) OR (doanh tai)) cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach thu ((bang xa) or (lang xa)) hoi. hieu van cam lo va ((doanh va) OR (doanh tai)) cua tre*.