Perhaps you should try some spelling variations:
thanh luc » thanh luu, than luc, nhan luc
van thanh » ban thanh, van tuan
hieu van » hieu va, thien van, lieu va
hanh vai » hanh vi, hanh va, hanh tai
van hanh » ban hanh, van anh, van ban
vai cua » dai cua, hai cua, lai cua
luc van » luoc van, luu van, duc van
tu sach » thu sach, su sach, te sach
mai hoi » mai khoi, dai hoi, lai hoi
cua tre » cua te, cuu tre, cua triet
sach v » sach va, sach y, sach 2
ma hoi » ma hoa, me hoi, va hoi
v nang » va nang, vu nang, van nang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach v nang ((((ma hoi) OR (xa hoi))) or (mai hoi)). hieu van thanh luc van hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach v nang ((((ma hoi) OR (xa hoi))) OR (mai hoi)). hieu van thanh luc van hanh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach v nang ((((ma hoi) OR (xa hoi))) or (mai hoi)). hieu van thanh luc van hanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach v nang ((((ma hoi) OR (xa hoi))) or (mai hoi)). hieu van thanh luc van hanh vai cua tre*.