Perhaps you should try some spelling variations:
van cham » van chat, van tham, va cham
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, ban thanh, va tinh
cham xuc » cam xuc, chat xuc, cham soc
nang mai » nang ma, nang tai, lang mai
mai khoi » mai khoa, tai khoa, cac khoi
so sach » bo sach, co sach, hoc sach
so sanh » do sanh
so viet » hoc viet
va dan » ca dan, va dao, va dau
vi so » vi soi, vi mo, va so

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)) ky nang mai khoi. hieu van cham xuc ((va thanh) or (va dan)) vi so viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (so sanh)) ky nang mai khoi. hieu van cham xuc ((va thanh) OR (va dan)) vi so viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) OR (so sanh)) ky nang mai khoi. hieu van cham xuc ((va thanh) or (va dan)) vi so viet".
• Adding a wildcard symbol may retrieve word variants: ((so sach) OR (so sanh)) ky nang mai khoi. hieu van cham xuc ((va thanh) or (va dan)) vi so viet*.