Perhaps you should try some spelling variations:
thanh phan » thanh pho, thanh san, thanh toan
thanh hai » thanh hoa, thanh san
cua viet » ca viet, hoa viet, cua vat
nam thuc » nam thuoc, am thuc, nam thu
nang ma » tang ma, sang ma, nang cao
hieu he » hieu ve, hiem he, hieu le
sac ky » sai ky
ma hoi » mai hoi, xa hoi, ma hoa
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: su ((sac ky) or (cac ky)) nang ma hoi. hieu he nam thuc vat ((thanh hai) OR (thanh phan)) cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sac ky) OR (cac ky)) nang ma hoi. hieu he nam thuc vat ((thanh hai) OR (thanh phan)) cua viet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sac ky) or (cac ky)) nang ma hoi. hieu he nam thuc vat ((thanh hai) OR (thanh phan)) cua viet*".