Perhaps you should try some spelling variations:
cuoc tuc » cuoi thuc, nuoc thuc, duoc tu
vu sach » vu bach, vu khach
su sach » so sach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va tinh » may tinh
tuc va » thuc va, truc va, tuc xa
va cua » va chua, via cua, ma cua
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: ((vu sach) OR (su sach)) ky nang xa hoi. hieu va cuoc tuc va tinh ((va cua) or (ca cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (su sach)) ky nang xa hoi. hieu va cuoc tuc va tinh ((va cua) OR (ca cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) OR (su sach)) ky nang xa hoi. hieu va cuoc tuc va tinh ((va cua) or (ca cua)) te".
• Adding a wildcard symbol may retrieve word variants: ((vu sach) OR (su sach)) ky nang xa hoi. hieu va cuoc tuc va tinh ((va cua) or (ca cua)) te*.