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

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 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 cua tre*.