Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
hieu van » hieu va, thien van, lieu va
chat xuc » chat huu, cam xuc, chao xu
sach ky » sac ky, sach y, sach ty
xuc van » duc van, luc van, vuc van
so sach » so sanh, bo sach, co sach
hieu ve » hieu va
dang ha » dong ha, dung ha, lang ha
ky dang » ky nang, ky danh
ha hoi » hoa hoi, ha noi, xa hoi

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 ky dang ha hoi. ((hieu ve) OR (hieu van)) chat xuc van thanh ((le cua) or (ly cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky dang ha hoi. ((hieu ve) OR (hieu van)) chat xuc van thanh ((le cua) OR (ly cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky dang ha hoi. ((hieu ve) OR (hieu van)) chat xuc van thanh ((le cua) or (ly cua)) tre".
• Adding a wildcard symbol may retrieve word variants: so sach ky dang ha hoi. ((hieu ve) OR (hieu van)) chat xuc van thanh ((le cua) or (ly cua)) tre*.