Perhaps you should try some spelling variations:
vien cac » vien bach, vien da, gian cac
vien dai » hien dai
van hanh » van thanh, ban hanh, van anh
hanh dai » hanh tai, hanh dao, vanh dai
te sach » toc sach
sach ly » sach y, sach lo, sach ty
ly nang » ky nang, ly hang, ly vang
nang xa » nang x, lang xa, nang ma
xuc van » duc van, luc van, vuc van
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 dai 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 dai 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 dai cua tu*.