Perhaps you should try some spelling variations:
vien dai » hien dai
hanh hai » thanh hai, nhanh hai, hang hai
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
lang xa » lang ha, dang xay, lang van
hai cua » thai cua, dai cua, hoi cua
sach ty » sach y, sach tu, sach thu
xuc van » duc van, luc van, vuc van
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 ty ((lang xa) or (nang x)) hoi. hieu ((ve cac) or (vien dai)) xuc van hanh hai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty ((lang xa) OR (nang x)) hoi. hieu ((ve cac) OR (vien dai)) xuc van hanh hai cua te.
• Adding a wildcard symbol may retrieve word variants: te sach ty ((lang xa) or (nang x)) hoi. hieu ((ve cac) or (vien dai)) xuc van hanh hai cua te*.