Perhaps you should try some spelling variations:
trinh vi » trinh va, trinh ve, trinh viet
hieu va » lieu va, hieu qua
va giao » van giao, va giai, va gia
tinh vi » tinh voi, tinh va, dinh vi
tu ban » thu ban, te ban
ban ky » van ky, dan ky
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ban ky nang x hoi. hieu va giao duc va ((tinh vi) OR (trinh vi)) cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ban ky nang x hoi. hieu va giao duc va ((tinh vi) OR (trinh vi)) cua te".
• Adding a wildcard symbol may retrieve word variants: tu ban ky nang x hoi. hieu va giao duc va ((tinh vi) OR (trinh vi)) cua te*.