Perhaps you should try some spelling variations:
thieu vien » thieu nien, thieu bien, thu vien
van thanh » ban thanh, van tuan
van hanh » ban hanh, van anh, van ban
vien cac » vien bach, vien dai, vien da
vai cua » dai cua, hai cua, lai cua
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
cac xuc » cam xuc, cac nuoc, chat xuc
sang ma » tang ma, nang ma, sang tao
ky sang » ky nang, ky dang, ky tang
ma hoi » mai hoi, xa hoi, ma hoa
vi 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 sang ma hoi. thieu vien cac xuc ((van hanh) or (van thanh)) ((vi cua) or (vai cua)) viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky sang ma hoi. thieu vien cac xuc ((van hanh) OR (van thanh)) ((vi cua) OR (vai cua)) viet.
• Adding a wildcard symbol may retrieve word variants: tu sach ky sang ma hoi. thieu vien cac xuc ((van hanh) or (van thanh)) ((vi cua) or (vai cua)) viet*.