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
lai hoi » dai hoi, lai hoa, lai roi
hieu va » lieu va, hieu qua
xuc van » luc van, vuc van, xuc ban
duc van » duc va, duc tan, duc manh
va cam » va cham, va cac, va cao
vi cua » vai cua, di cua
cua su » qua su

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