Perhaps you should try some spelling variations:
can thuc » dan thuc, van thuc, cay thuc
thuc dan » thuc hanh, hoc dan, thuc vat
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu va » hieu qua
hanh ve » hanh va, hanh kem
y nang » ky nang, ly nang, v nang
cua te » cua tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y nang xa hoi. ((hieu va) or (lieu va)) can thuc dan ((hanh ve) OR (hanh vi)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. ((hieu va) OR (lieu va)) can thuc dan ((hanh ve) OR (hanh vi)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang xa hoi. ((hieu va) or (lieu va)) can thuc dan ((hanh ve) OR (hanh vi)) cua te".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. ((hieu va) or (lieu va)) can thuc dan ((hanh ve) OR (hanh vi)) cua te*.