Perhaps you should try some spelling variations:
may nang » may nong, ky nang, cam nang
so sach » bo sach, co sach, hoc sach
hang di » hang doi, hang vi, hang dien
so sanh » do sanh
va hang » van hang, va nang, va lang
cac xuc » cam xuc, cac nuoc, chat xuc
qua cac » cua cac
xuc va » duc va, tuc va, luc va
v nang » va nang, vu nang, van nang
di cua » dai cua, doi cua, de cua
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: ((so sach) OR (so sanh)) ((may nang) or (v nang)) x hoi. hieu qua cac xuc va hang di cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (so sanh)) ((may nang) OR (v nang)) x hoi. hieu qua cac xuc va hang di cua vat.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) OR (so sanh)) ((may nang) or (v nang)) x hoi. hieu qua cac xuc va hang di cua vat".
• Adding a wildcard symbol may retrieve word variants: ((so sach) OR (so sanh)) ((may nang) or (v nang)) x hoi. hieu qua cac xuc va hang di cua vat*.