Perhaps you should try some spelling variations:
thieu nien » thien nhien
sang tao » hang tai
van hanh » van thanh, ban hanh, van anh
nien cac » vien cac, dien cac, bien cac
sach ky » sac ky, sach y, sach ty
sang ma » tang ma, nang ma, mang may
cac xuc » cam xuc, cac nuoc, chat xuc
xuc van » duc van, luc van, vuc van
vai cua » dai cua, hai cua, lai cua
su sach » so sach, vu sach
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: su sach ky ((sang ma) OR (sang tao)) hoi. thieu nien cac xuc van hanh ((vi cua) or (vai cua)) viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((sang ma) OR (sang tao)) hoi. thieu nien cac xuc van hanh ((vi cua) OR (vai cua)) viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky ((sang ma) OR (sang tao)) hoi. thieu nien cac xuc van hanh ((vi cua) or (vai cua)) viet".
• Adding a wildcard symbol may retrieve word variants: su sach ky ((sang ma) OR (sang tao)) hoi. thieu nien cac xuc van hanh ((vi cua) or (vai cua)) viet*.