Perhaps you should try some spelling variations:
sach thu » sach thue, sach thieu, sach tham
cam thuc » am thuc, nam thuc, cam thu
sach ty » sach y, xach tay, sach hay
danh di » danh du, xanh di, danh dien
va danh » va dinh, va dan, va hanh
thuc va » thuc vat, thuc dan, thuc day
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
sach tu » cach tu, sach uu, sach xu
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao
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: te ((((sach ty) OR (sach thu))) or (sach tu)) nang xa hoi. hieu va cam thuc va danh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((((sach ty) OR (sach thu))) OR (sach tu)) nang xa hoi. hieu va cam thuc va danh di cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((((sach ty) OR (sach thu))) or (sach tu)) nang xa hoi. hieu va cam thuc va danh di cua tre".
• Adding a wildcard symbol may retrieve word variants: te ((((sach ty) OR (sach thu))) or (sach tu)) nang xa hoi. hieu va cam thuc va danh di cua tre*.