Perhaps you should try some spelling variations:
ve triet » va trien, su triet
thanh ha » thanh hoa, thanh hai, nhanh ha
thanh va » thanh van, hanh va, thanh ve
nam thuc » nam thuoc, am thuc, nam thu
cam tuc » cam xuc, cam tu, dam thuc
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
su sach » so sach, vu sach
x hoi » xa hoi, o hoi, x ho

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