Perhaps you should try some spelling variations:
sang tao » hang tai
danh dau » lanh dao, hang dau, danh tu
su triet » su viet, su tien, ve triet
tu sach » thu sach, te sach, tu cach
su sach » so sach, vu sach
ky sang » ky nang, ky dang, ky tang
xe danh » le danh, te danh, xe dan
he nam » nghe nam
dau su » dau tu, dan su, da su

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 (su sach)) ky sang tao boi. hieu ((he nam) or (ha nam)) thu xe danh dau su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ky sang tao boi. hieu ((he nam) OR (ha nam)) thu xe danh dau su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (su sach)) ky sang tao boi. hieu ((he nam) or (ha nam)) thu xe danh dau su triet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (su sach)) ky sang tao boi. hieu ((he nam) or (ha nam)) thu xe danh dau su triet*.