Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
cau treo » cau theo, cau tren, cau triet
danh sai » dung sai, danh bat, danh dau
van danh » van doanh, van anh, van hanh
viec cac » vien cac, viec cua, viec lam
su sach » so sach, vu sach
sai cau » lai chau, mai chau, hai chau
tu sach » thu sach, te sach, tu cach
v nang » va nang, vu nang, van nang
y nang » ky nang, ly nang, may nang
cac lo » cac lop, cac co, cac bo
lo van » le van, vo van, so van

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)) ((y nang) or (v nang)) xa hoi. hieu viec cac lo van danh sai cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ((y nang) OR (v nang)) xa hoi. hieu viec cac lo van danh sai cau treo*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (su sach)) ((y nang) or (v nang)) xa hoi. hieu viec cac lo van danh sai cau treo*".