Perhaps you should try some spelling variations:
thuat san » thuat toan, thuat song, thuat lanh
chat luc » chat xuc, chat lua, nhan luc
van hanh » van thanh, ban hanh, van ban
cua viet » ca viet, hoa viet, cua vat
ty nang » ky nang, ty xang, ty hang
hieu ve » hieu va, hieu van
su sach » so sach, vu sach
van anh » van thanh, tuan anh, van minh
lai cua » dai cua, hai cua, lai chau
ve chat » va chat, van chat

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

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