Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
cau tren » cu tren, dau tren, ca tren
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
ro hoi » o hoi, mo hoi, ro doi
co hoi » co hoc, co loi
ve cam » ve cham, ve cac, va cam
xuc va » duc va, tuc va, luc va

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 ky nang ((ro hoi) OR (co hoi)). hieu ve cam xuc va hanh vi ((cua viet) OR (cau tren))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang ((ro hoi) OR (co hoi)). hieu ve cam xuc va hanh vi ((cua viet) OR (cau tren))".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang ((ro hoi) OR (co hoi)). hieu ve cam xuc va hanh vi ((cua viet) OR (cau tren))*.