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
va trinh » van trinh, va tinh, lap trinh
trinh do » trinh ky
cau treo » cau theo, cau tren, cau triet
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
ca tren » cau tren, cu tren, la tren

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 va trinh do ((cau treo) or (ca tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. lieu vien sach nuoc va trinh do ((cau treo) OR (ca tren)).
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. lieu vien sach nuoc va trinh do ((cau treo) or (ca tren))*.