Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh oai
thanh dat » thanh san, thanh hai, thanh van
cuu tre » cua tre, cau tren, cau treo
duc ban » duc tan, duc van, dua ban
ve cham » va cham, ve chat, vu cham
tang ma » mang may, tang van
ky tang » ky nang, ky dang, kho tang
sac ky » cac ky, sai ky
ve cam » ve cac, va cam, ve cai
ma hoi » mai hoi, xa hoi, ma hoa
su sac » su sach, su cac, su xac

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky tang ma hoi. hieu ((ve cam) or (ve cham)) duc ban ((thanh dai) OR (thanh dat)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky tang ma hoi. hieu ((ve cam) OR (ve cham)) duc ban ((thanh dai) OR (thanh dat)) cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky tang ma hoi. hieu ((ve cam) or (ve cham)) duc ban ((thanh dai) OR (thanh dat)) cuu tre".
• Adding a wildcard symbol may retrieve word variants: su sac ky tang ma hoi. hieu ((ve cam) or (ve cham)) duc ban ((thanh dai) OR (thanh dat)) cuu tre*.