Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
van han » van hanh, van phan, van nhan
tai cua » thai cua, tai cuc, tri cua
va cau » van cau, va dau, va cao
va han » va phan, va hanh, va hang
cua tu » cua tuc, cua su, cua cu

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 ky nang xa hoi. lieu ((va cau) OR (va cac)) xuc ((va han) or (van han)) tai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. lieu ((va cau) OR (va cac)) xuc ((va han) OR (van han)) tai cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang xa hoi. lieu ((va cau) OR (va cac)) xuc ((va han) or (van han)) tai cua tu".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. lieu ((va cau) OR (va cac)) xuc ((va han) or (van han)) tai cua tu*.