Perhaps you should try some spelling variations:
thien van » thi van
thu sach » tu sach, thuat sach, thuoc sach
hieu van » hieu va, lieu va, hieu ve
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
cau xuc » cam xuc, cau luc, cau truc
xuc ban » duc ban, cuc ban, quoc ban
danh di » xanh di, danh dien, danh gia
danh du » danh dau, danh tu, dinh du

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ky nang xa hoi. ((hieu van) or (thien van)) cau xuc ban ((danh di) or (danh du)) hoa viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang xa hoi. ((hieu van) OR (thien van)) cau xuc ban ((danh di) OR (danh du)) hoa viet.
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang xa hoi. ((hieu van) or (thien van)) cau xuc ban ((danh di) or (danh du)) hoa viet*.