Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
thanh hoa » thanh pho
ky tang » ky nang, ky dang, kho tang
tang ma » mang may, tang van
ve pham » v pham, ve phan, ve phat
cua tre » cua te, cuu tre, cua triet
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
ma hoi » mai hoi, xa hoi, ma hoa

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 pham) OR (vi pham)) duc tan ((thanh dai) or (thanh hoa)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky tang ma hoi. hieu ((ve pham) OR (vi pham)) duc tan ((thanh dai) OR (thanh hoa)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky tang ma hoi. hieu ((ve pham) OR (vi pham)) duc tan ((thanh dai) or (thanh hoa)) cua tre".
• Adding a wildcard symbol may retrieve word variants: su sac ky tang ma hoi. hieu ((ve pham) OR (vi pham)) duc tan ((thanh dai) or (thanh hoa)) cua tre*.