Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh vai » hanh vi, hanh va, hanh tai
thi nang » thi cong, ki nang, thi hanh
vai cua » dai cua, hai cua, lai cua
tu sach » thu sach, te sach, tu cach
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va nam » van nam, ha nam, va nay
thu va » thuc va, thue va, thu ha

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) or (su sach)) thi nang xa hoi. hieu va nam ((thu va) OR (tu va)) hanh vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) thi nang xa hoi. hieu va nam ((thu va) OR (tu va)) hanh vai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (su sach)) thi nang xa hoi. hieu va nam ((thu va) OR (tu va)) hanh vai cua triet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) thi nang xa hoi. hieu va nam ((thu va) OR (tu va)) hanh vai cua triet*.