Perhaps you should try some spelling variations:
su cach » su sach, tu cach, cuu cach
tu nano » truc nano
han tai » hang tai, nhan tai, van tai
cac xuc » cam xuc, cac nuoc, chat xuc
hieu va » lieu va, hieu qua
tai cua » thai cua, tai cuc, tri cua
tu nang » tru nang, tu nong, tu lang
su cac » tu cac, su cao, su can
xuc va » duc va, tuc va, luc va
va han » va phan, van han, va hanh
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 (tu nano)) x hoi. hieu va cac xuc va han tai cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su cach) OR (su cac)) ((tu nang) OR (tu nano)) x hoi. hieu va cac xuc va han tai cua vat.
• Adding a wildcard symbol may retrieve word variants: ((su cach) or (su cac)) ((tu nang) or (tu nano)) x hoi. hieu va cac xuc va han tai cua vat*.