Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
te sach » toc sach
va hanh » van hanh, va thanh, va danh
vien da » vien dai, hien dai
viec da » viec dat, viec va, viec ha
nang ma » tang ma, sang ma, nang cao
xang ma » tang ma, sang ma, rang ma
ca viet » va viet, co viet, hoa viet
xuc va » duc va, tuc va, luc va
vai ca » vai cac, vai cua, bai ca

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach thieu ((xang ma) OR (nang ma)) hoi. hieu ((viec da) or (vien da)) xuc va hanh vai ca viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thieu ((xang ma) OR (nang ma)) hoi. hieu ((viec da) OR (vien da)) xuc va hanh vai ca viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach thieu ((xang ma) OR (nang ma)) hoi. hieu ((viec da) or (vien da)) xuc va hanh vai ca viet".
• Adding a wildcard symbol may retrieve word variants: te sach thieu ((xang ma) OR (nang ma)) hoi. hieu ((viec da) or (vien da)) xuc va hanh vai ca viet*.