Perhaps you should try some spelling variations:
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
hieu va » lieu va, hieu qua
va chat » van chat, va phat, cao chat
xuc van » duc van, vuc van, xuc ban
luc van » luoc van, luu van, duc van

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