Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
cua tre » cua te, cuu tre, cua triet
duc ban » duc tan, duc van, duc man
dua ban » cua ban, qua ban, mua ban
hieu ve » hieu va, hieu van
tang ma » mang may, tang van
ky tang » ky nang, ky dang, kho tang
ve cam » ve cham, ve cac, va cam
sac ky » cac ky, sai ky
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 ((duc ban) or (((dua ban) OR (dia ban)))) thanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky tang ma hoi. hieu ve cam ((duc ban) OR (((dua ban) OR (dia ban)))) thanh dai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky tang ma hoi. hieu ve cam ((duc ban) or (((dua ban) OR (dia ban)))) thanh dai cua tre".
• Adding a wildcard symbol may retrieve word variants: su sac ky tang ma hoi. hieu ve cam ((duc ban) or (((dua ban) OR (dia ban)))) thanh dai cua tre*.