Perhaps you should try some spelling variations:
hieu phan » phieu phan, lieu phan, hieu pham
cua triet » cua viet, su triet, va triet
phan dat » phan dau, phan dai, phan day
dat luan » dan luan, dau luan, dat quang
van hanh » van thanh, ban hanh, van anh
thu sai » thu san, thu ai, thu dai
thu tai » tu tai, tru tai, thuoc tai
thu hai » thu ha, thu nhap, thu hang
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
vi cua » vai cua, di 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 sai) or (((thu tai) OR (thu hai)))) ky lang xa hoi. hieu phan dat luan van hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sai) OR (((thu tai) OR (thu hai)))) ky lang xa hoi. hieu phan dat luan van hanh vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sai) or (((thu tai) OR (thu hai)))) ky lang xa hoi. hieu phan dat luan van hanh vi cua triet".
• Adding a wildcard symbol may retrieve word variants: ((thu sai) or (((thu tai) OR (thu hai)))) ky lang xa hoi. hieu phan dat luan van hanh vi cua triet*.