Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
ve triet » va trien, su triet
lang xa » lang ha, dang xay, lang van
co sach » bo sach, cuon sach, hoc sach
hieu ve » hieu va, hieu van
cau luc » cau truc, cau phuc
va hanh » van hanh, va thanh, va danh
ve cau » ke cau, va cau, ve cac
luc va » duc va, tuc va, loc va
tai ve » tai va, tai he, tai le

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

• Performing a fuzzy search may retrieve terms with similar spellings: co sach y ((((nang x) or (mang may))) or (lang xa)) hoi. hieu ve cau luc va hanh tai ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: co sach y ((((nang x) OR (mang may))) OR (lang xa)) hoi. hieu ve cau luc va hanh tai ve triet.
• Adding a wildcard symbol may retrieve word variants: co sach y ((((nang x) or (mang may))) or (lang xa)) hoi. hieu ve cau luc va hanh tai ve triet*.