Perhaps you should try some spelling variations:
ve triet » va trien, su triet
van hanh » van thanh, ban hanh, van anh
vien cac » vien bach, vien dai, vien da
sach ty » sach y, sach tu, sach thu
xuc van » duc van, luc van, vuc van
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
ve cam » ve cham, ve cac, va cam
kem ve » ke ve
ve cai » va cai, ve cac, ve tai

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ty nang xa hoi. hieu ((((ve cam) or (ve cai))) or (vien cac)) xuc van hanh kem ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang xa hoi. hieu ((((ve cam) OR (ve cai))) OR (vien cac)) xuc van hanh kem ve triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang xa hoi. hieu ((((ve cam) or (ve cai))) or (vien cac)) xuc van hanh kem ve triet*.