Perhaps you should try some spelling variations:
cham thuc » nham thuc, pham thuc, tham thuc
te sach » toc sach
ve cham » va cham, ve chat, vu cham
doi cua » hoi cua
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
hieu ve » hieu va, hieu van
sach ly » sach y, sach lo, sach ty
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa

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