Perhaps you should try some spelling variations:
hoc cac » hoc cao
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
va cham » va chat, va tham
xuc ban » duc ban, quoc ban, xuat ban
cuc ban » cua ban, cac ban, cuu ban
vi cua » vai cua, di cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc cac ky lang xa hoi. hieu va cham ((xuc ban) or (cuc ban)) hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc cac ky lang xa hoi. hieu va cham ((xuc ban) OR (cuc ban)) hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: hoc cac ky lang xa hoi. hieu va cham ((xuc ban) or (cuc ban)) hanh vi cua te*.