Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
va thanh » gia thanh, ban thanh, va tinh
lang van » dang van, tang van, hoang van
tu sach » thu sach, su sach, te sach
tai cua » thai cua, tai cuc, tri cua
cam duc » cam xuc, cao duc, pham duc
hieu va » lieu va, hieu qua
nang ma » tang ma, sang ma, nang cao
lang xa » lang ha, dang xay
cua tre » cua te, cuu tre, cua triet
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 y ((nang ma) or (((lang xa) OR (lang van)))) hoi. hieu va cam duc va thanh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y ((nang ma) OR (((lang xa) OR (lang van)))) hoi. hieu va cam duc va thanh tai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y ((nang ma) or (((lang xa) OR (lang van)))) hoi. hieu va cam duc va thanh tai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach y ((nang ma) or (((lang xa) OR (lang van)))) hoi. hieu va cam duc va thanh tai cua tre*.