Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
su cach » su sach, tu cach, cuu cach
va hanh » van hanh, va thanh, va danh
tai cua » thai cua, tai cuc, tri cua
tu nang » tru nang, tu nong, tu nano
qua co » qua con, cua co, qua ca
co luc » coc luc, co luy
luc va » duc va, tuc va, loc va
su cac » tu cac, su cao, su can
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su cach) or (su cac)) ((tu nang) or (truc nano)) x hoi. hieu qua co luc va hanh tai cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su cach) OR (su cac)) ((tu nang) OR (truc nano)) x hoi. hieu qua co luc va hanh tai cua vat.
• Adding a wildcard symbol may retrieve word variants: ((su cach) or (su cac)) ((tu nang) or (truc nano)) x hoi. hieu qua co luc va hanh tai cua vat*.