Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa
duc manh » suc manh, duc anh, duc tan
duc minh » duc anh
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va, hieu van
tang xa » trang xa, tang ma, lang xa
ky tang » ky nang, ky dang, kho tang
xac ky » cac ky, sac ky, bac ky
ve cam » ve cham, ve cac, va cam
su xac » pu xac, su cac

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

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