Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
viec bach » vien bach, viec ban, viec bao
hanh vai » hanh vi, hanh va, hanh tai
bach xuc » bach tuoc, bach xuan, bach hue
cua viet » ca viet, hoa viet, cua vat
nang ma » tang ma, sang ma, nang cao
ma khoa » may khoa, mai khoa, da khoa
tu nang » tru nang, tu nong, tu nano
te sach » toc sach
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
tu sach » thu sach, su sach, tu cach
xuc va » duc va, tuc va, luc va

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 (te sach)) tu nang ma khoa. hieu viec bach xuc va hanh vai cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) tu nang ma khoa. hieu viec bach xuc va hanh vai cua viet.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) tu nang ma khoa. hieu viec bach xuc va hanh vai cua viet*.