Perhaps you should try some spelling variations:
thanh thai » thanh hai, thanh tai, nhanh thai
vat thanh » dat thanh, gat thanh, tat thanh
phan thuc » nhan thuc, phap thuc, pham thuc
so cach » so sach, co cach, loi cach
cua tre » cuu tre, cua triet, dua tren
ve phan » va phan, ke phan, ve phat
hieu ve » hieu va, hieu van
cach tu » cach thuc
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
cua te » cua tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: so cach tu ((nang xa) OR (nang ma)) hoi. hieu ve phan thuc vat thanh thai ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so cach tu ((nang xa) OR (nang ma)) hoi. hieu ve phan thuc vat thanh thai ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "so cach tu ((nang xa) OR (nang ma)) hoi. hieu ve phan thuc vat thanh thai ((cua tre) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: so cach tu ((nang xa) OR (nang ma)) hoi. hieu ve phan thuc vat thanh thai ((cua tre) or (cua te))*.