Perhaps you should try some spelling variations:
vu sach » vu bach, su sach, vu khach
sach ty » sach y, sach tu, sach thu
nang xa » lang xa, nang ma, mang xa
hieu ve » hieu va, hieu van
dinh du » dinh duc, dinh cu, dinh tu
ve cam » ve cham, ve cac, va cam
xuc va » tuc va, luc va, xac va
du cua » duy cua, dau cua, dum cua
cua te » cua tu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ty ((nang xa) OR (nang x)) hoi. hieu ve cam ((xuc va) OR (duc va)) dinh du cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ty ((nang xa) or (nang x)) hoi. hieu ve cam ((xuc va) OR (duc va)) dinh du cua te~".
• Adding a wildcard symbol may retrieve word variants: vu sach ty ((nang xa) or (nang x)) hoi. hieu ve cam ((xuc va) OR (duc va)) dinh du cua te*.