Perhaps you should try some spelling variations:
dich duc » dinh duc, dich nuoc, dich vu
dang xay » dang van, van xay
vu sach » vu bach, su sach, vu khach
duc cua » doc cua, luc cua, tuc cua
tuc van » thuc van, truc van, tuc va
sach lo » sach dao, sach doi, sach hoi
lang xa » lang ha, lang van
va cam » va cham, va cao, va cai
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 lo ((lang xa) or (dang xay)) hoi. hieu ((va cam) OR (va cac)) tuc van dich duc cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach lo ((lang xa) OR (dang xay)) hoi. hieu ((va cam) OR (va cac)) tuc van dich duc cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach lo ((lang xa) or (dang xay)) hoi. hieu ((va cam) OR (va cac)) tuc van dich duc cua te".
• Adding a wildcard symbol may retrieve word variants: vu sach lo ((lang xa) or (dang xay)) hoi. hieu ((va cam) OR (va cac)) tuc van dich duc cua te*.