Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
hieu cac » hieu va, hieu luc, hieu van
cac chat » cao chat, cac thuat, cac nha
thanh do » thanh de, thanh pho, thanh hoa
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
cua tre » cuu tre, cua triet, dua tren
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 cac chat va van thanh do ((cua tre) OR (cua te))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang xa hoi. hieu cac chat va van thanh do ((cua tre) OR (cua te))".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. hieu cac chat va van thanh do ((cua tre) OR (cua te))*.