Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
danh vai » danh sai, danh va, doanh van
vai cua » dai cua, hai cua, lai cua
va danh » va dinh, va dan, va hanh
su sach » vu sach
hieu ve » hieu va
nang xa » nang x, lang xa, nang ma
so sach » so sanh, bo sach, co sach
cac tu » cac thu, cach tu, cac du
y nang » ky nang, ly nang, v nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) OR (so sach)) y nang xa hoi. ((hieu ve) or (hieu van)) cac tu va danh vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) y nang xa hoi. ((hieu ve) OR (hieu van)) cac tu va danh vai cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (so sach)) y nang xa hoi. ((hieu ve) or (hieu van)) cac tu va danh vai cua triet*".