Perhaps you should try some spelling variations:
thanh lai » thanh hai, thanh lap, thanh loi
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, lieu va
dang mat » dang vat, dang mau, dung mat
lai cua » dai cua, hai cua, lai chau
tu cach » tu cac
mat hoa » ma hoa, mai hoa, chat hoa
ky dang » ky nang, ky danh
te sach » toc sach
cua tre » cua te, cuu tre, cua triet
ca dua » cay dua, ca da, ca lua
ca cua » co cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (te sach)) ky dang mat hoa. hieu van ((ca dua) OR (ca cua)) ban thanh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (te sach)) ky dang mat hoa. hieu van ((ca dua) OR (ca cua)) ban thanh lai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cach) or (te sach)) ky dang mat hoa. hieu van ((ca dua) OR (ca cua)) ban thanh lai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (te sach)) ky dang mat hoa. hieu van ((ca dua) OR (ca cua)) ban thanh lai cua tre*.