Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
van hanh » van thanh, ban hanh, van ban
sach ty » sach y, sach tu, sach thu
van anh » van thanh, tuan anh, van minh
vu sach » vu bach, su sach, vu khach
ve cham » va cham, ve chat, vu cham
ty nang » ky nang, ty xang, ty hang
vi cua » vai cua, di cua
va cam » va cham, va cac, va cao
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ty nang x hoi. hieu ((ve cham) or (va cam)) duc ((van hanh) OR (van anh)) vi cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ty nang x hoi. hieu ((ve cham) OR (va cam)) duc ((van hanh) OR (van anh)) vi cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ty nang x hoi. hieu ((ve cham) or (va cam)) duc ((van hanh) OR (van anh)) vi cua viet".
• Adding a wildcard symbol may retrieve word variants: vu sach ty nang x hoi. hieu ((ve cham) or (va cam)) duc ((van hanh) OR (van anh)) vi cua viet*.