Perhaps you should try some spelling variations:
hanh thai » nhanh thai, hinh thai, hanh tai
thai cua » than cua, tai cuc, tri cua
cau thuc » cau truc, cuu thuc, can thuc
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
cua tre » cua te, cuu tre, cua triet
sach tu » sach thu, cach tu, sach uu
hieu va » lieu va
nang xa » nang x, lang xa, nang ma
sach ty » sach y, sach thu, xach tay

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 tu) OR (sach ty)) nang xa hoi. ((hieu va) or (hieu qua)) cau thuc va hanh thai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach tu) OR (sach ty)) nang xa hoi. ((hieu va) OR (hieu qua)) cau thuc va hanh thai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach tu) OR (sach ty)) nang xa hoi. ((hieu va) or (hieu qua)) cau thuc va hanh thai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sach tu) OR (sach ty)) nang xa hoi. ((hieu va) or (hieu qua)) cau thuc va hanh thai cua tre*.