Perhaps you should try some spelling variations:
dan hanh » dang hanh, dan khanh, dan thanh
thuc dan » thuc hanh, hoc dan, thuc vat
hanh vai » hanh vi, hanh va, hanh tai
te sach » toc sach
vai cuu » vai cua
cuu tre » cua tre, cau tren, cau treo
y nang » ky nang, ly nang, v nang
x hoi » xa hoi, o hoi, 5 hoi

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 y nang ((x hoi) OR (x ho)). lieu ((va co) or (vo co)) thuc dan hanh vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang ((x hoi) OR (x ho)). lieu ((va co) OR (vo co)) thuc dan hanh vai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang ((x hoi) OR (x ho)). lieu ((va co) or (vo co)) thuc dan hanh vai cuu tre".
• Adding a wildcard symbol may retrieve word variants: te sach y nang ((x hoi) OR (x ho)). lieu ((va co) or (vo co)) thuc dan hanh vai cuu tre*.