Perhaps you should try some spelling variations:
vien dai » hien dai
vien cac » vien bach, vien da, gian cac
van hanh » van thanh, ban hanh, van ban
tai cua » thai cua, tai cuc, tri cua
van anh » van thanh, tuan anh, van minh
te sach » toc sach
sach ly » sach y, sach lo, sach ty
nang xa » nang x, lang xa, nang ma
ly nang » ky nang, ly hang, ly vang
cua tu » cua tuc, cua su, cua cu

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