Perhaps you should try some spelling variations:
te sach » toc sach
sach ky » sac ky, sach y, sach ty
dau cua » dai cua, day cua, cau cua
va cham » va chat, va tham
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
xuc va » duc va, tuc va, xac va
luc va » duc va, tuc va, loc va
ca cua » co cua

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