Perhaps you should try some spelling variations:
va trien » va truyen, va thiet, va tuyen
thanh va » thanh van, hanh va, thanh ha
cam duc » cao duc, pham duc, nam duoc
su sach » so sach, vu sach
nang co » nang cao, nang doc, nang noi
te sach » toc sach
hieu ve » hieu va, hieu van
co hoi » co hoc, co loi
va va » va van, va vua, va vai

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 (te sach)) ky nang co hoi. hieu ve ((cam duc) OR (cam xuc)) gia thanh va va trien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (te sach)) ky nang co hoi. hieu ve ((cam duc) OR (cam xuc)) gia thanh va va trien*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (te sach)) ky nang co hoi. hieu ve ((cam duc) OR (cam xuc)) gia thanh va va trien*".