Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh vai » thanh hai, thanh van, thanh tai
cua triet » cua viet, su triet, va triet
nang mai » nang ma, nang tai, lang mai
cau treo » cau theo, cau tren, cau triet
te sach » toc sach
sach ky » sac ky, sach y, sach ty
mai hoi » mai khoi, dai hoi, lai hoi
hieu va » hieu qua
cay dia » cac dia, cay dua, cay tia

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 ky nang mai hoi. ((hieu va) OR (lieu va)) cay dia ban thanh vai ((cau treo) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang mai hoi. ((hieu va) OR (lieu va)) cay dia ban thanh vai ((cau treo) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang mai hoi. ((hieu va) OR (lieu va)) cay dia ban thanh vai ((cau treo) or (cua triet))".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang mai hoi. ((hieu va) OR (lieu va)) cay dia ban thanh vai ((cau treo) or (cua triet))*.