Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
day thanh » dao thanh, dat thanh, da thanh
cau thuc » cau truc, cuu thuc, can thuc
thuc day » thuc dan, thuc vat
thanh di » thanh doi, thanh de, thanh do
nang xa » nang x, lang xa, nang ma
hieu ve » hieu van
hieu va » lieu va, hieu qua
y nang » ky nang, ly nang, v nang
di cua » dai cua, doi cua, de cua
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: thuat sach y nang xa hoi. ((hieu ve) or (hieu va)) cau thuc day thanh di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach y nang xa hoi. ((hieu ve) OR (hieu va)) cau thuc day thanh di cua te.
• Adding a wildcard symbol may retrieve word variants: thuat sach y nang xa hoi. ((hieu ve) or (hieu va)) cau thuc day thanh di cua te*.