Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
vien cac » vien bach, vien dai, vien da
tu sach » thu sach, te sach, tu cach
su sach » so sach, vu sach
tu nang » tru nang, tu nong, tu nano
nang ma » tang ma, sang ma, nang cao
cac xuc » cam xuc, cac nuoc, chat xuc
va hanh » van hanh, va thanh, va danh
ma hoi » mai hoi, xa hoi, ma hoa
xuc va » duc va, tuc va, luc va
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) OR (su sach)) tu nang ma hoi. hieu vien cac xuc va hanh vi cua vat~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (su sach)) tu nang ma hoi. hieu vien cac xuc va hanh vi cua vat".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (su sach)) tu nang ma hoi. hieu vien cac xuc va hanh vi cua vat*.