Perhaps you should try some spelling variations:
nam thuoc » nam thuc, nam thu, nha thuoc
thuoc vat » thuc vat, thuoc va, thuoc bat
ve triet » va trien, su triet
lang hoa » hang hoa, lang ha, nang hoa
sach ky » sac ky, sach ty, sach kem
hanh va » hang va, hanh vi
hieu he » hieu ve, hiem he, hieu le
hoa hoi » khoa hoi, hoa hoc, hoa doi
he nam » ha nam, nghe 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 he nam thuoc 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 he nam thuoc 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 he nam thuoc vat ((hanh va) or (hanh kem)) ve triet*.