Perhaps you should try some spelling variations:
trinh voi » trinh hoi, trinh vi, trinh boi
ky nganh » ky nang, ly ngan, k ngan
nganh xa » nganh xay, nganh ma, nganh mac
va trinh » van trinh, va tinh, lap trinh
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
voi cua » hoi cua, doi cua, moi cua
va cai » va cac, va bai, va dai
va cao » va cac, va co, va dao
cua te » cua tu

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 nganh xa hoi. hieu ((va cai) or (va cao)) duc va trinh voi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nganh xa hoi. hieu ((va cai) OR (va cao)) duc va trinh voi cua te.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nganh xa hoi. hieu ((va cai) or (va cao)) duc va trinh voi cua te*.