Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ban doanh » van doanh, san doanh, toan doanh
ban danh » ban hanh, ban dan, van danh
thu sach » tu sach, thuat sach, thuoc sach
hieu ve » hieu va, hieu van
cam cuc » cam xuc, cham cuu, pham cuc
ky tang » ky nang, kho tang, ky trong
ky dang » ky nang, ky danh
vi cua » vai cua, di cua
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ((ky dang) or (ky tang)) xa hoi. hieu ve cam cuc ((ban danh) OR (ban doanh)) vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((ky dang) OR (ky tang)) xa hoi. hieu ve cam cuc ((ban danh) OR (ban doanh)) vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((ky dang) or (ky tang)) xa hoi. hieu ve cam cuc ((ban danh) OR (ban doanh)) vi cua triet".
• Adding a wildcard symbol may retrieve word variants: thu sach ((ky dang) or (ky tang)) xa hoi. hieu ve cam cuc ((ban danh) OR (ban doanh)) vi cua triet*.