Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
thanh hai » thanh phan, thanh san
thanh hoa » thanh pho
chua tre » chua tri, cua tre, chua trieu
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
luc ban » duc ban, cuc ban, luc bat
y nang » ky nang, ly nang, v nang
va coc » va cuoc, va cac, va hoc

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach y nang xa hoi. hieu va coc luc ban ((thanh hai) OR (thanh hoa)) chua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach y nang xa hoi. hieu va coc luc ban ((thanh hai) OR (thanh hoa)) chua tre".
• Adding a wildcard symbol may retrieve word variants: thuoc sach y nang xa hoi. hieu va coc luc ban ((thanh hai) OR (thanh hoa)) chua tre*.