Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
cua tre » cua te, cuu tre, cua triet
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
duc van » duc va, duc tan, duc manh
duc ban » duc tan, dua ban, duc man
su sac » su sach, su cac, su xac
va cam » va cham, va cac, va cao
sac ky » cac ky, sai ky
ve cam » ve cham, ve cac, ve cai

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 xa hoi. hieu ((ve cam) or (va cam)) ((duc ban) OR (duc van)) thanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky tang xa hoi. hieu ((ve cam) OR (va cam)) ((duc ban) OR (duc van)) thanh dai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky tang xa hoi. hieu ((ve cam) or (va cam)) ((duc ban) OR (duc van)) thanh dai cua tre*".