Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
hieu ve » hieu va, hieu van
cam duc » cam xuc, cao duc, pham duc
va hanh » van hanh, va thanh, va danh
ve cam » ve cham, ve cac, va cam
cua cu » cua chu, cua cau, cua co
cua su » qua su
x hoi » o hoi, x ho, 5 hoi

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

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