Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh dai » thanh hai, thanh tai, thanh dat
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
cam qua » cau qua, cac qua, nam qua
cay qua » cau qua, cac qua, cay lua
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky dang xa hoi. hieu van ((cam qua) OR (cay qua)) ban thanh dai cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky dang xa hoi. hieu van ((cam qua) OR (cay qua)) ban thanh dai cua triet".
• Adding a wildcard symbol may retrieve word variants: su sac ky dang xa hoi. hieu van ((cam qua) OR (cay qua)) ban thanh dai cua triet*.