Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
hieu ve » hieu va, hieu van
cam duc » cam xuc, cao duc, pham duc
vai cua » dai cua, lai cua, bai cua
hai cua » thai cua, dai cua, hoi cua
tu dan » tuc dan, tu ban, cu dan
dan ky » van ky
ve cam » ve cham, ve cac, va cam
x hoi » xa hoi, x ho, 5 hoi
o hoi » co hoi, o hoc, o hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu dan ky nang ((x hoi) or (o hoi)). hieu ve cam duc va thanh ((vai cua) OR (hai cua)) cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu dan ky nang ((x hoi) OR (o hoi)). hieu ve cam duc va thanh ((vai cua) OR (hai cua)) cu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu dan ky nang ((x hoi) or (o hoi)). hieu ve cam duc va thanh ((vai cua) OR (hai cua)) cu".
• Adding a wildcard symbol may retrieve word variants: tu dan ky nang ((x hoi) or (o hoi)). hieu ve cam duc va thanh ((vai cua) OR (hai cua)) cu*.