Perhaps you should try some spelling variations:
vu khach » vu khanh, vu khac, vay khach
va thanh » gia thanh, ban thanh, va tinh
thanh di » thanh doi, thanh de, thanh do
su sach » so sach, vu sach
hieu ve » hieu va, hieu van
cao duc » dao duc, cao suc, giao duc
cu tren » tu tren, dua tren
ve cao » va cao, ve bao, ve cac
x hoi » o hoi, x ho, 5 hoi
di cu » di cau, di cua, di du

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) or (vu khach)) ky nang ((x hoi) or (xa hoi)). hieu ve cao duc va thanh di cu tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu khach)) ky nang ((x hoi) OR (xa hoi)). hieu ve cao duc va thanh di cu tren.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu khach)) ky nang ((x hoi) or (xa hoi)). hieu ve cao duc va thanh di cu tren*.