Perhaps you should try some spelling variations:
hanh dum » hanh dua, thanh dam, hanh dung
van hanh » van thanh, ban hanh, van anh
vu sach » vu bach, su sach, vu khach
vang xa » mang xa, ang xa, dang xay
dum cua » duy cua, dam cua, dung cua
lang xa » lang ha, dang xay, lang van
sach lo » sach dao, sach doi, sach hoi
tuc van » thuc van, truc van, tuc va
va cham » va chat, va tham
va cam » va cac, 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 ((vang xa) OR (lang xa)) hoi. hieu ((va cam) or (va cham)) tuc van hanh dum cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach lo ((vang xa) OR (lang xa)) hoi. hieu ((va cam) OR (va cham)) tuc van hanh dum cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach lo ((vang xa) OR (lang xa)) hoi. hieu ((va cam) or (va cham)) tuc van hanh dum cua te".
• Adding a wildcard symbol may retrieve word variants: vu sach lo ((vang xa) OR (lang xa)) hoi. hieu ((va cam) or (va cham)) tuc van hanh dum cua te*.