Perhaps you should try some spelling variations:
thuoc sach » nuoc sach, thuat sach, thuoc sinh
hoc thieu » toc thieu, hoc hien
hoc sach » hoc sinh, hoc cac, hoc anh
khoa hoc » hoa hoc
nhung ba » nhung bai, nhung bac, nhung bi
khi cua » thai cua
chi cua » chi cuc, cuoi cua, chat cua
ba don » la don, va don, bat dong

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thuoc sach) OR (hoc sach)) khoa hoc thieu ((khi cua) or (chi cua)) ets : nhung ba don vi đai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuoc sach) OR (hoc sach)) khoa hoc thieu ((khi cua) OR (chi cua)) ets : nhung ba don vi đai.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuoc sach) OR (hoc sach)) khoa hoc thieu ((khi cua) or (chi cua)) ets : nhung ba don vi đai".
• Adding a wildcard symbol may retrieve word variants: ((thuoc sach) OR (hoc sach)) khoa hoc thieu ((khi cua) or (chi cua)) ets : nhung ba don vi đai*.