Perhaps you should try some spelling variations:
su sach » so sach, vu sach
te sach » toc sach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cao thi » cau thi, cao tai, dao thi
xa hanh » xa thanh, xa khanh, va hanh
va cao » va cac, va co, va dao
vi cau » va cau, ve cau, viet cau
di cau » da cau, diem cau

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) or (te sach)) ky nang xa hoi. hieu va cao thi xa hanh ((vi cau) or (di cau)) treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (te sach)) ky nang xa hoi. hieu va cao thi xa hanh ((vi cau) OR (di cau)) treo.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (te sach)) ky nang xa hoi. hieu va cao thi xa hanh ((vi cau) or (di cau)) treo*.