Perhaps you should try some spelling variations:
trinh dien » tinh dien, trinh tin
may trinh » may tinh, lap trinh, quy trinh
dien cuc » dien tu, dieu cua, vien cac
truc may » tren may, truc va
bo sach » co sach, hoc sach
va nang » van nang, da nang, cam nang
mai hoi » mai khoi, dai hoi, lai hoi
sach va » sach xa, sach ha, sach dao
cuc te » cua te, cuc thue, cuc tieu
va cao » va cac, va co, va dao
va cam » va cham, va cac, va cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: bo sach va nang ((mai hoi) or (xa hoi)). lieu ((va cam) or (va cao)) truc may trinh dien cuc te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: bo sach va nang ((mai hoi) OR (xa hoi)). lieu ((va cam) OR (va cao)) truc may trinh dien cuc te.
• Adding a wildcard symbol may retrieve word variants: bo sach va nang ((mai hoi) or (xa hoi)). lieu ((va cam) or (va cao)) truc may trinh dien cuc te*.