Perhaps you should try some spelling variations:
ve triet » va trien, su triet
vanh dau » van dau, danh dau, vanh dai
hieu van » hieu va, thien van, lieu va
va vanh » va van, va danh, va hanh
truc va » thuc va, thuc vat, trung va
van cau » van dau, van hau, van chat
tu sach » thu sach, su sach, tu cach
ty nang » ky nang, ty xang, ty hang
te sach » toc sach
dau ve » dap ve

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 (te sach)) ty nang ((ma hoa) or (xa hoi)). hieu van cau truc va vanh dau ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ty nang ((ma hoa) OR (xa hoi)). hieu van cau truc va vanh dau ve triet.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) ty nang ((ma hoa) or (xa hoi)). hieu van cau truc va vanh dau ve triet*.