Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
vien cac » vien bach, vien dai, vien da
van hanh » van thanh, ban hanh, van anh
hanh ve » hanh vi, hanh va, hanh kem
xuc van » duc van, luc van, xuc ban
te sach » toc sach
nang xa » nang x, lang xa, nang ma
sach v » sach va, sach y, sach 2
ve cam » ve cham, va cam, ve cai
v nang » va nang, vu nang, van nang
ve cac » va cac
ve su » va su

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 v nang xa hoi. hieu ((ve cam) or (((ve cac) OR (vien cac)))) xuc van hanh ve su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach v nang xa hoi. hieu ((ve cam) OR (((ve cac) OR (vien cac)))) xuc van hanh ve su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach v nang xa hoi. hieu ((ve cam) or (((ve cac) OR (vien cac)))) xuc van hanh ve su triet".
• Adding a wildcard symbol may retrieve word variants: te sach v nang xa hoi. hieu ((ve cam) or (((ve cac) OR (vien cac)))) xuc van hanh ve su triet*.