Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh oai
thanh tai » thanh hai, thanh toan, doanh tai
cua tre » cua te, cua triet, dua tren
tu sach » thu sach, su sach, te sach
cam cua » ca cua, nam cua, cau cua
hieu va » lieu va, hieu qua
cuu tre » cau tren, cau treo
y nang » ky nang, ly nang, v nang
va cam » va cham, va cac, va cao
x hoi » xa hoi, o hoi, x ho

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 x hoi. hieu va cam cua ban ((thanh vai) OR (thanh tai)) ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang x hoi. hieu va cam cua ban ((thanh vai) OR (thanh tai)) ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang x hoi. hieu va cam cua ban ((thanh vai) OR (thanh tai)) ((cua tre) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang x hoi. hieu va cam cua ban ((thanh vai) OR (thanh tai)) ((cua tre) or (cuu tre))*.