Perhaps you should try some spelling variations:
nano cau » nang cau, bang cau, nano va
sinh ty » sinh ly, sinh y, sinh tu
dinh vi » dinh ve, dinh viet, dinh tri
nano xa » nano va, nano bac, nano dua
hieu ve » hieu va, hieu van
ve cam » ve cham, ve cac, va cam
luc va » duc va, tuc va
loc va » hoc va
vi cua » vai cua, di cua
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: hoc sinh ty ((nano xa) or (nano cau)) hoi. hieu ve cam ((luc va) OR (loc va)) dinh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sinh ty ((nano xa) OR (nano cau)) hoi. hieu ve cam ((luc va) OR (loc va)) dinh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sinh ty ((nano xa) or (nano cau)) hoi. hieu ve cam ((luc va) OR (loc va)) dinh vi cua te".
• Adding a wildcard symbol may retrieve word variants: hoc sinh ty ((nano xa) or (nano cau)) hoi. hieu ve cam ((luc va) OR (loc va)) dinh vi cua te*.