Perhaps you should try some spelling variations:
ve triet » va trien, su triet
nam thuc » nam thuoc, am thuc, nam thu
lang hoa » hang hoa, lang ha, nang hoa
hanh va » hang va, hanh vi
sach ky » sac ky, sach ty, sach kem
hieu ve » hieu va, hieu van
hoa hoi » khoa hoi, hoa hoc, hoa doi
ve nam » he nam, va nam, le nam

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 ky) or (sach y)) lang hoa hoi. hieu ve nam thuc vat ((hanh va) or (hanh kem)) ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sach y)) lang hoa hoi. hieu ve nam thuc vat ((hanh va) OR (hanh kem)) ve triet.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) or (sach y)) lang hoa hoi. hieu ve nam thuc vat ((hanh va) or (hanh kem)) ve triet*.