Perhaps you should try some spelling variations:
tham thuc » nham thuc, pham thuc, tam thuc
ve triet » va trien, su triet
le lang » le tang, le dang, le xang
van hoi » van hoa, van hoc, van hoe
hieu vu » hieu va, hieu ve, hieu su
vu tham » va tham, vu kham, vu cham
lo lang » o lang, so lang, hoa lang
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
hanh ke » hanh kem, thanh ke, hanh ky
te sach » toc sach
ke ve » ke va, ke he, de ve

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 ((lo lang) OR (le lang)) van hoi. hieu vu tham thuc va hanh ke ve triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((lo lang) OR (le lang)) van hoi. hieu vu tham thuc va hanh ke ve triet".
• Adding a wildcard symbol may retrieve word variants: te sach ((lo lang) OR (le lang)) van hoi. hieu vu tham thuc va hanh ke ve triet*.