Perhaps you should try some spelling variations:
vanh dai » van dai, vanh tai, lanh dao
te sach » toc sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
xuc van » duc van, vuc van, xuc ban
luc van » luoc van, luu van, duc van
ve cac » vien cac
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 ty nang xa hoi. hieu ((ve cac) or (va cac)) ((xuc van) OR (luc van)) vanh dai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang xa hoi. hieu ((ve cac) OR (va cac)) ((xuc van) OR (luc van)) vanh dai cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty nang xa hoi. hieu ((ve cac) or (va cac)) ((xuc van) OR (luc van)) vanh dai cua tu".
• Adding a wildcard symbol may retrieve word variants: te sach ty nang xa hoi. hieu ((ve cac) or (va cac)) ((xuc van) OR (luc van)) vanh dai cua tu*.