Perhaps you should try some spelling variations:
van triet » va triet, van thiet, van trieu
so sach » so sanh, bo sach, hoc sach
co sach » bo sach, cuon sach, hoc sach
ly nang » ky nang, ly hang, ly vang
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve cac » va cac, vien cac
thu va » thuc va, thue va, tu va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((so sach) OR (co sach)) ly nang xa hoi. hieu ve cac ((thu va) or (thuc vat)) hanh vi van triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (co sach)) ly nang xa hoi. hieu ve cac ((thu va) OR (thuc vat)) hanh vi van triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) OR (co sach)) ly nang xa hoi. hieu ve cac ((thu va) or (thuc vat)) hanh vi van triet".
• Adding a wildcard symbol may retrieve word variants: ((so sach) OR (co sach)) ly nang xa hoi. hieu ve cac ((thu va) or (thuc vat)) hanh vi van triet*.