Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
hang vai » hang va, hang tai, hang hai
duc ngan » duc ngon, duc nhan, luc ngan
chat duc » chat xuc, chat doc, chet duoc
vai cua » dai cua, hai cua, lai cua
ve chat » va chat, van chat
hieu ve » hieu va, hieu van
mai hoi » mai khoi, dai hoi, lai hoi
tu sach » thu sach, su sach, te sach
ma hoi » xa hoi, ma hoa, me hoi
tu sac » tu cac, tu san, tu bac

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sac) or (tu sach)) ky nang ((ma hoi) or (mai hoi)). hieu ve chat duc ngan hang vai cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu sach)) ky nang ((ma hoi) OR (mai hoi)). hieu ve chat duc ngan hang vai cua viet.
• Adding a wildcard symbol may retrieve word variants: ((tu sac) or (tu sach)) ky nang ((ma hoi) or (mai hoi)). hieu ve chat duc ngan hang vai cua viet*.