Perhaps you should try some spelling variations:
thanh hoi » thanh hoai, thanh hoa, thanh hai
van thanh » ban thanh, van tuan
cua triet » cua viet, su triet, va triet
ky sang » ky nang, ky tang, duy sang
ky dang » ky nang, ky danh
hieu ve » hieu va, hieu van
cam duc » cam xuc, cao duc, pham duc
duc van » duc va, duc tan, duc manh
cua tre » cua te, cuu tre, dua tren
ve cam » ve cham, ve cac, va cam

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 sang) or (ky dang)) xa hoi. hieu ve cam duc van thanh hoi ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ((ky sang) OR (ky dang)) xa hoi. hieu ve cam duc van thanh hoi ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: tu cac ((ky sang) or (ky dang)) xa hoi. hieu ve cam duc van thanh hoi ((cua tre) or (cua triet))*.