Perhaps you should try some spelling variations:
sach thue » sach thu, sach thieu, sach tham
thue nang » thien nang, thuat nang, thi nang
hieu viec » nhieu viec, hieu ve, sieu viet
hanh tai » thanh tai, hang tai, han tai
hanh vai » hanh vi, hanh va, hanh van
tu sach » thu sach, su sach, te sach
ca viet » va viet, co viet, hoa viet
viec da » viec dat, vien da, viec va
nang ma » tang ma, sang ma, nang cao
ma hoi » mai hoi, xa hoi, ma hoa
xuc va » tuc va, luc va, xac 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 thue nang ma hoi. hieu viec da ((xuc va) or (duc va)) ((hanh vai) or (hanh tai)) ca viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach thue nang ma hoi. hieu viec da ((xuc va) OR (duc va)) ((hanh vai) OR (hanh tai)) ca viet.
• Adding a wildcard symbol may retrieve word variants: tu sach thue nang ma hoi. hieu viec da ((xuc va) or (duc va)) ((hanh vai) or (hanh tai)) ca viet*.