Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh tai, hanh van
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve chao » ve chat, ve cham, ve cho
hanh va » hang va, hanh vi
cuu tre » cua tre, cau tren, cau treo
y nang » ky nang, ly nang, v nang
xu van » tu van, vu van, su van

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 ve chao xu van ((hanh vai) OR (hanh va)) cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang xa hoi. hieu ve chao xu van ((hanh vai) OR (hanh va)) cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. hieu ve chao xu van ((hanh vai) OR (hanh va)) cuu tre*.