Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh hoa » thanh pho
hieu van » thien van, lieu va, hieu ve
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
xuc ban » duc ban, cuc ban, quoc ban
hoa cua » hoa chat, hoa xuat
sac ky » sai ky
ma hoi » mai hoi, xa hoi, ma hoa

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sac ky) OR (cac ky)) nang ma hoi. ((hieu van) or (hieu va)) cam xuc ban thanh hoa cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sac ky) OR (cac ky)) nang ma hoi. ((hieu van) OR (hieu va)) cam xuc ban thanh hoa cua vat.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sac ky) OR (cac ky)) nang ma hoi. ((hieu van) or (hieu va)) cam xuc ban thanh hoa cua vat".
• Adding a wildcard symbol may retrieve word variants: tu ((sac ky) OR (cac ky)) nang ma hoi. ((hieu van) or (hieu va)) cam xuc ban thanh hoa cua vat*.