Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
dang mau » dong mau, dang van, dang su
ky dang » ky nang, ky danh
mau hoi » cau hoi, mai hoi, mau ho
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
tai cua » thai cua, tai cuc, tri cua
cua tre » cua te, cuu tre, cua triet
tu san » thu san, tu ban, tu can
san ky » sang ky, van ky, dan ky
luc va » tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu san ky dang mau hoi. hieu ve cham ((luc va) or (duc va)) thanh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky dang mau hoi. hieu ve cham ((luc va) OR (duc va)) thanh tai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu san ky dang mau hoi. hieu ve cham ((luc va) or (duc va)) thanh tai cua tre*.