Perhaps you should try some spelling variations:
nuoc sach » nguoi sach, hoc sach, cuoc cach
phuc va » phuc vu, thuc va, chuc va
nang xa » nang x, lang xa, nang ma
cua tre » cuu tre, cua triet, dua tren
hanh de » hanh ve, hanh kem
va hanh » van hanh, va thanh, va danh
ke cau » ket cau
y nang » ky nang, ly nang, v nang
ve cau » va cau, ve cac, le cau
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: nuoc sach y nang xa hoi. hieu ((ve cau) or (ke cau)) phuc va hanh de ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nuoc sach y nang xa hoi. hieu ((ve cau) OR (ke cau)) phuc va hanh de ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "nuoc sach y nang xa hoi. hieu ((ve cau) or (ke cau)) phuc va hanh de ((cua tre) OR (cua te))".
• Adding a wildcard symbol may retrieve word variants: nuoc sach y nang xa hoi. hieu ((ve cau) or (ke cau)) phuc va hanh de ((cua tre) OR (cua te))*.