Perhaps you should try some spelling variations:
su sach » so sach, vu sach
vang xa » lang xa, ang xa, dang xay
mang xa » lang xa, mang may, dang xay
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
hoi cua » hoi chuc
ve cam » ve cham, ve cac, va cam
xuc va » duc va, tuc va, luc va
di cua » dai cua, doi cua, de cua

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

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