Perhaps you should try some spelling variations:
lieu vien » lieu dien, lieu viet, dieu kien
vien sach » vien bach, dien sach, viet sach
sach nuoc » sach duoc, cac nuoc, bach tuoc
cau tren » cu tren, dau tren, ca tren
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
va xanh » va danh, va anh, va banh
va hanh » van hanh, va thanh, ban hanh
doi cau » doi dau, di cau, doi ca

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ky nang xa hoi. lieu vien sach nuoc ((va xanh) or (va hanh)) doi cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky nang xa hoi. lieu vien sach nuoc ((va xanh) OR (va hanh)) doi cau tren.
• Adding a wildcard symbol may retrieve word variants: so sach ky nang xa hoi. lieu vien sach nuoc ((va xanh) or (va hanh)) doi cau tren*.