Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
va triet » va thiet, va trien, ve triet
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
va cham » va chat, va tham
va tinh » may tinh
va cai » va cac, va bai, va dai
x hoi » xa hoi, o hoi, x ho
di va » dai va, di vao, doi va

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ty nang x hoi. lieu ((va cai) or (va cham)) xuc ((va tinh) or (van hanh)) di va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang x hoi. lieu ((va cai) OR (va cham)) xuc ((va tinh) OR (van hanh)) di va triet.
• Adding a wildcard symbol may retrieve word variants: su sach ty nang x hoi. lieu ((va cai) or (va cham)) xuc ((va tinh) or (van hanh)) di va triet*.