Perhaps you should try some spelling variations:
may nang » may nong, ky nang, cam nang
so sach » bo sach, co sach, hoc sach
so sanh » do sanh
qua cac » cua cac
cac xuc » cam xuc, cac nuoc, chat xuc
va lang » va nang, hoa lang
lang di » lang dai, hang di, lang du
v nang » va nang, vu nang, van nang
xuc va » duc va, tuc va, luc va
di cua » dai cua, doi cua, de cua

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 ho. hieu qua cac xuc va lang 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 ho. hieu qua cac xuc va lang di cua vat.
• Adding a wildcard symbol may retrieve word variants: ((so sach) or (so sanh)) ((may nang) or (v nang)) x ho. hieu qua cac xuc va lang di cua vat*.