Perhaps you should try some spelling variations:
chet triet » chuyen triet, thuyet triet
ban thanh » ban hanh, ban hang
thanh de » hanh de, thanh ve, thanh do
de chet » de che, se chet, diem chet
xuc ban » duc ban, cuc ban, quoc ban
su sach » so sach
nang ro » nang co, nang ho, nang ra
vu sach » vu bach, vu khach
ro hoi » co hoi, o hoi, mo hoi
va cam » va cham, va cac, va cao
ve cac » va cac, vien cac

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 (vu sach)) ky nang ro hoi. hieu ((ve cac) or (va cam)) xuc ban thanh de chet triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) ky nang ro hoi. hieu ((ve cac) OR (va cam)) xuc ban thanh de chet triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (vu sach)) ky nang ro hoi. hieu ((ve cac) or (va cam)) xuc ban thanh de chet triet".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (vu sach)) ky nang ro hoi. hieu ((ve cac) or (va cam)) xuc ban thanh de chet triet*.