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

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky nang xa hoi. lieu vien ((sach nuoc) OR (sach duoc)) ((va xanh) or (va anh)) doi cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. lieu vien ((sach nuoc) OR (sach duoc)) ((va xanh) OR (va anh)) doi cau tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang xa hoi. lieu vien ((sach nuoc) OR (sach duoc)) ((va xanh) or (va anh)) doi cau tren".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. lieu vien ((sach nuoc) OR (sach duoc)) ((va xanh) or (va anh)) doi cau tren*.