Perhaps you should try some spelling variations:
co sach » bo sach, cuon sach, hoc sach
vang xa » lang xa, mang xa, ang xa
hieu ve » hieu va, hieu van
cam tuc » cam xuc, cam tu, nam thuc
xa hanh » xa thanh, xa khanh, va hanh
y vang » ly vang
ve cam » ve cham, ve cac, va cam
di cua » doi cua, de cua, do cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: co sach y vang xa hoi. hieu ve cam tuc xa hanh ((di cua) or (dai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: co sach y vang xa hoi. hieu ve cam tuc xa hanh ((di cua) OR (dai cua)) tre.
• Adding a wildcard symbol may retrieve word variants: co sach y vang xa hoi. hieu ve cam tuc xa hanh ((di cua) or (dai cua)) tre*.