Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
toc sach » hoc sach, doc sach, thuoc sach
nang xa » nang x, lang xa, nang ma
duc van » duc va, duc tan, duc manh
van anh » van thanh, tuan anh, van minh
anh ve » hanh ve, anh va, anh viet
ve cua » le cua, de cua, te cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) OR (toc sach)) ky nang xa hoi. hieu ((qua cac) or (cua cac)) duc van anh ve cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ky nang xa hoi. hieu ((qua cac) OR (cua cac)) duc van anh ve cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) ky nang xa hoi. hieu ((qua cac) or (cua cac)) duc van anh ve cua triet".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (toc sach)) ky nang xa hoi. hieu ((qua cac) or (cua cac)) duc van anh ve cua triet*.