Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
chat luc » chat xuc, chat lua, nhan luc
doanh va » doan va, doanh tai, doanh cua
va doanh » van doanh, vay doanh, va danh
thu sach » thuat sach, thuoc sach, thu hoach
ky lang » ky nang, ky tang, tay lang
ky dang » ky nang, ky danh
hieu ve » hieu va, hieu van
ve chat » va chat, van chat
tu sach » su sach, te sach, tu cach
luc va » duc va, tuc va, loc va
va cua » va chua, via cua, ca cua

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) OR (tu sach)) ((ky lang) or (ky dang)) xa hoi. hieu ve chat luc va doanh va cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (tu sach)) ((ky lang) OR (ky dang)) xa hoi. hieu ve chat luc va doanh va cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) OR (tu sach)) ((ky lang) or (ky dang)) xa hoi. hieu ve chat luc va doanh va cua triet*".