Perhaps you should try some spelling variations:
ky nganh » ky nang, ly ngan, k ngan
nganh xa » nganh xay, nganh ma, nganh mac
va tinh » may tinh
doi cua » hoi cua
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
va cam » va cham, va cac, va cai
va cao » va cac, va co, va dao

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 nganh xa hoi. hieu ((va cam) or (va cao)) duc va tinh ((doi cua) OR (dai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nganh xa hoi. hieu ((va cam) OR (va cao)) duc va tinh ((doi cua) OR (dai cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nganh xa hoi. hieu ((va cam) or (va cao)) duc va tinh ((doi cua) OR (dai cua)) triet".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nganh xa hoi. hieu ((va cam) or (va cao)) duc va tinh ((doi cua) OR (dai cua)) triet*.