Perhaps you should try some spelling variations:
nhieu viec » hieu viec, nhien viet
viec cac » vien cac, viec cua, viec lam
thu sach » thuat sach, thuoc sach, thu hoach
tu nang » tru nang, tu nong, tu nano
nang ma » tang ma, sang ma, nang cao
tu sach » su sach, te sach, tu cach
cac xuc » cam xuc, cac nuoc, chat xuc
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
cua tre » cua te, cuu tre, cua triet
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: ((thu sach) OR (tu sach)) tu nang ma hoi. nhieu viec cac xuc va danh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) OR (tu sach)) tu nang ma hoi. nhieu viec cac xuc va danh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) OR (tu sach)) tu nang ma hoi. nhieu viec cac xuc va danh vi cua tre*.