Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
cau theo » cau thi, cau tao
cau treo » cau tren, cau triet, cau trieu
va thanh » gia thanh, ban thanh, va tinh
cam duc » cam xuc, cao duc, pham duc
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
hieu va » lieu va, hieu qua
hieu ve » hieu van
xang xa » lang xa, mang xa, ang xa

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 ty xang xa hoi. ((hieu ve) or (hieu va)) cam duc va thanh tai ((cau treo) or (cau theo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty xang xa hoi. ((hieu ve) OR (hieu va)) cam duc va thanh tai ((cau treo) OR (cau theo)).
• Adding a wildcard symbol may retrieve word variants: tu sach ty xang xa hoi. ((hieu ve) or (hieu va)) cam duc va thanh tai ((cau treo) or (cau theo))*.