Perhaps you should try some spelling variations:
nam thuc » nam thuoc, am thuc, nam thu
van dinh » van minh, van dich, va dinh
vu sach » vu bach, su sach, vu khach
vang xa » mang xa, ang xa, dang xay
dinh du » dinh duc, dinh cu, dinh tu
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
sach ly » sach y, sach lo, sach ty
cam tuc » cam xuc, cam tu, dam thuc
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.

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ly ((vang xa) or (lang xa)) hoi. hieu va ((cam tuc) OR (nam thuc)) van dinh du cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ly ((vang xa) OR (lang xa)) hoi. hieu va ((cam tuc) OR (nam thuc)) van dinh du cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ly ((vang xa) or (lang xa)) hoi. hieu va ((cam tuc) OR (nam thuc)) van dinh du cua te".
• Adding a wildcard symbol may retrieve word variants: vu sach ly ((vang xa) or (lang xa)) hoi. hieu va ((cam tuc) OR (nam thuc)) van dinh du cua te*.