Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
thanh va » thanh van, hanh va, thanh ha
nang mai » nang ma, nang tai, lang mai
mai khoi » mai khoa, tai khoa, cac khoi
thanh vi » hanh vi, thanh ve, nhanh vi
so sach » so sanh, bo sach, co sach
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va
ty nang » ky nang, ty xang, ty hang
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc va

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 ty nang mai khoi. ((hieu ve) or (hieu van)) cam xuc va ((thanh vi) OR (thanh va)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty nang mai khoi. ((hieu ve) OR (hieu van)) cam xuc va ((thanh vi) OR (thanh va)) cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ty nang mai khoi. ((hieu ve) or (hieu van)) cam xuc va ((thanh vi) OR (thanh va)) cua tre*".