Perhaps you should try some spelling variations:
chet triet » chuyen triet, thuyet triet
thanh van » thanh san, thanh toan, thanh phan
ban thanh » ban hanh, ban hang
kho tang » cao tang
van chet » van chat, van chuyet, van chien
hieu va » lieu va, hieu qua
lam cuc » lam cua, lam duoc, pham cuc
cuc ban » cua ban, cac ban, cuu ban
ky dang » ky nang, ky danh
ky tang » ky nang, ky trong, tay tang
tu sach » thu sach, su sach, te sach
va lam » van lam, va lap

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

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