Perhaps you should try some spelling variations:
day hanh » day nhanh, day thanh, dao hanh
thuc day » thuc dan, thuc vat
cam thuc » am thuc, nam thuc, cam thu
lang xa » lang ha, dang xay, lang van
hanh di » hanh vi, hanh de, hang di
hieu ve » hieu va, hieu van
su sach » vu sach
so sach » so sanh, bo sach, co sach
nang xa » nang x, nang ma, mang xa
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, ve cac, va cam
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (so sach)) y ((nang xa) or (lang xa)) hoi. hieu ve cam thuc day hanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) y ((nang xa) OR (lang xa)) hoi. hieu ve cam thuc day hanh di cua tre.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sach)) y ((nang xa) or (lang xa)) hoi. hieu ve cam thuc day hanh di cua tre*.