Perhaps you should try some spelling variations:
thien van » thi van
cua viet » ca viet, hoa viet, cua vat
hieu van » lieu va, hieu ve
ban danh » ban doanh, ban hanh, ban dan
danh di » danh du, xanh di, danh dien
xuc ban » duc ban, cuc ban, quoc ban
cau xuc » cam xuc, cau luc, cau truc
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
di cua » dai cua, doi cua, de cua

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 ky nang xa hoi. ((((hieu van) OR (hieu va))) or (thien van)) cau xuc ban danh di cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. ((((hieu van) OR (hieu va))) OR (thien van)) cau xuc ban danh di cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang xa hoi. ((((hieu van) OR (hieu va))) or (thien van)) cau xuc ban danh di cua viet".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. ((((hieu van) OR (hieu va))) or (thien van)) cau xuc ban danh di cua viet*.