Perhaps you should try some spelling variations:
thuat sac » thuat sach, thuat san, thuat tac
cuc ban » cua ban, cac ban, cuu ban
danh di » danh du, xanh di, danh dien
danh vi » hanh vi, dinh vi, danh va
can ban » van ban, toan ban
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
sac ky » cac ky, sai ky
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sac ky lang xa hoi. hieu ve cam ((cuc ban) or (can ban)) ((danh vi) OR (danh di)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sac ky lang xa hoi. hieu ve cam ((cuc ban) OR (can ban)) ((danh vi) OR (danh di)) cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sac ky lang xa hoi. hieu ve cam ((cuc ban) or (can ban)) ((danh vi) OR (danh di)) cua tre*".