Perhaps you should try some spelling variations:
hoc thieu » toc thieu, hoc hien
nguoi cua » nguoi qua, nguoi dua, nguoi xua
nghia cua » nghiep cua, nghia xa, nghia duy
nhung bo » nhung bi, nhung bai, nhung don
tu sach » thu sach, su sach, te sach
nha hoc » nha thuoc, khoa hoc, nha nuoc
o vi » co vi, so vi
o va » do va, so va, co va

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

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