Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
cau treo » cau theo, cau tren, cau triet
va thanh » gia thanh, ban thanh, va tinh
cuu tre » cua tre, cau tren
cam duc » cam xuc, cao duc, pham duc
sach ky » sac ky, sach y, sach ty
tu sach » thu sach, su sach, te sach
lang ha » long ha
lang xa » dang xay, lang van
hieu va » lieu va, hieu qua
va cam » va cham, va cac, va cao

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 ky ((lang xa) or (lang ha)) hoi. hieu va cam duc va thanh dai ((cuu tre) OR (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((lang xa) OR (lang ha)) hoi. hieu va cam duc va thanh dai ((cuu tre) OR (cau treo)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky ((lang xa) or (lang ha)) hoi. hieu va cam duc va thanh dai ((cuu tre) OR (cau treo))".
• Adding a wildcard symbol may retrieve word variants: tu sach ky ((lang xa) or (lang ha)) hoi. hieu va cam duc va thanh dai ((cuu tre) OR (cau treo))*.