Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
vang xa » mang xa, ang xa, dang xay
hanh de » hanh ve, hanh kem
lang xa » lang ha, dang xay, lang van
sach ly » sach y, sach lo, sach ty
tuc van » thuc van, truc van, tuc va
de cua » le cua, te cua, dieu cua
ve cai » va cai, ve tai, ve cau
ve cac » va cac, vien cac
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: te sach ly ((vang xa) OR (lang xa)) hoi. hieu ((ve cai) or (ve cac)) tuc van hanh de cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ly ((vang xa) OR (lang xa)) hoi. hieu ((ve cai) OR (ve cac)) tuc van hanh de cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ly ((vang xa) OR (lang xa)) hoi. hieu ((ve cai) or (ve cac)) tuc van hanh de cua te".
• Adding a wildcard symbol may retrieve word variants: te sach ly ((vang xa) OR (lang xa)) hoi. hieu ((ve cai) or (ve cac)) tuc van hanh de cua te*.