Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
cua viet » ca viet, hoa viet, cua vat
toan ky » than ky, toan ly, toan ke
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
va hanh » va thanh, va danh, ban hanh
va cam » va cham, va cao, va cai
di cua » dai cua, doi cua, de 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 toan ky lang xa hoi. hieu ((va cam) or (va cac)) truc ((va hanh) OR (van hanh)) di cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat toan ky lang xa hoi. hieu ((va cam) OR (va cac)) truc ((va hanh) OR (van hanh)) di cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat toan ky lang xa hoi. hieu ((va cam) or (va cac)) truc ((va hanh) OR (van hanh)) di cua viet".
• Adding a wildcard symbol may retrieve word variants: thuat toan ky lang xa hoi. hieu ((va cam) or (va cac)) truc ((va hanh) OR (van hanh)) di cua viet*.