Perhaps you should try some spelling variations:
chet triet » chuyen triet, thuyet triet
ban thanh » ban hanh, ban hang
thanh le » thinh le, thanh ve, thanh de
sach ky » sac ky, sach y, sach ty
le chet » la chet, se chet, le chien
xuc ban » duc ban, cuc ban, quoc ban
su sach » so sach, vu sach
nang ro » nang co, nang ho, nang ra
va cam » va cham, va cac, va cao
va cai » va cac, va bai, va dai
ro hoi » co hoi, o hoi, mo hoi
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 ky nang ro hoi. hieu ((((va cai) or (ve cac))) or (va cam)) xuc ban thanh le chet triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang ro hoi. hieu ((((va cai) OR (ve cac))) OR (va cam)) xuc ban thanh le chet triet.
• Adding a wildcard symbol may retrieve word variants: su sach ky nang ro hoi. hieu ((((va cai) or (ve cac))) or (va cam)) xuc ban thanh le chet triet*.