Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
tham thuc » nham thuc, pham thuc, tam thuc
hieu van » hieu va, thien van, lieu va
van tham » van thanh, van tuan, van chat
danh vi » hanh vi, dinh vi, danh va
cua tre » cua te, cuu tre, dua tren
danh di » danh du, xanh di, danh dien
nang ma » tang ma, sang ma, nang cao
thuc va » thuc vat, thuc dan, thuc day
dan ky » van ky
ma hoi » mai hoi, xa hoi, ma hoa
tu dan » tuc dan, tu ban, cu dan

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 ma hoi. hieu van tham thuc va ((danh vi) or (danh di)) ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu dan ky nang ma hoi. hieu van tham thuc va ((danh vi) OR (danh di)) ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: tu dan ky nang ma hoi. hieu van tham thuc va ((danh vi) or (danh di)) ((cua tre) or (cua triet))*.