Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, tu cach
tinh vi » trinh vi, tinh voi, tinh va
va tinh » may tinh
cac luc » cau luc, coc luc, cac nuoc
hieu ve » hieu va, hieu van
mai hoi » mai khoi, dai hoi, lai hoi
te sach » toc sach
ma hoi » xa hoi, ma hoa, me hoi
ve cac » va cac, vien cac
luc va » duc va, tuc va, loc va
vi cua » vai cua, di cua

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) or (te sach)) ky nang ((ma hoi) or (mai hoi)). hieu ve cac luc va tinh vi cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ky nang ((ma hoi) OR (mai hoi)). hieu ve cac luc va tinh vi cua vat.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) ky nang ((ma hoi) or (mai hoi)). hieu ve cac luc va tinh vi cua vat*.