Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
sach dao » lanh dao
sach ha » sach nha, sach han, sach xa
coc loc » coc luc, chon loc
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
loc va » hoc va, luc va
vi cau » va cau, ve cau, viet cau
di cau » da cau, diem cau
va coc » va cuoc, va cac, va hoc

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 ha) or (sach dao)) nang xa hoi. hieu va coc loc va thanh ((vi cau) OR (di cau)) treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ha) OR (sach dao)) nang xa hoi. hieu va coc loc va thanh ((vi cau) OR (di cau)) treo.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ha) or (sach dao)) nang xa hoi. hieu va coc loc va thanh ((vi cau) OR (di cau)) treo".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ha) or (sach dao)) nang xa hoi. hieu va coc loc va thanh ((vi cau) OR (di cau)) treo*.