Perhaps you should try some spelling variations:
thieu vien » thieu nien, thieu bien, thu vien
cua viet » ca viet, hoa viet, cua vat
van hanh » van thanh, ban hanh, van ban
vien cac » vien bach, vien dai, vien da
sach ky » sac ky, sach y, sach ty
cac xuc » cam xuc, cac nuoc, chat xuc
nang xa » lang xa, nang ma, mang xa
van anh » van thanh, tuan anh, van minh
tu sach » thu sach, su sach, te sach
vi cua » vai cua, di 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) or (nang x)) hoi. thieu vien cac xuc ((van hanh) OR (van anh)) vi cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((nang xa) OR (nang x)) hoi. thieu vien cac xuc ((van hanh) OR (van anh)) vi cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky ((nang xa) or (nang x)) hoi. thieu vien cac xuc ((van hanh) OR (van anh)) vi cua viet".
• Adding a wildcard symbol may retrieve word variants: tu sach ky ((nang xa) or (nang x)) hoi. thieu vien cac xuc ((van hanh) OR (van anh)) vi cua viet*.