Perhaps you should try some spelling variations:
tham thuc » nham thuc, pham thuc, tam thuc
dinh dau » dinh dat, dinh du, dinh dao
danh dau » lanh dao, hang dau, danh tu
van tham » van thanh, van tuan, van chat
cua tre » cua te, cua triet, dua tren
toc sac » toc sach, toc san, hoc sach
thuc va » thuc vat, thuc dan, thuc day
thi van » thi lan, thi hanh, thi nang
nang xa » nang x, lang xa, nang ma
cuu tre » cau tren, cau treo
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sac ky nang xa hoi. thi van tham thuc va ((dinh dau) or (danh dau)) ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sac ky nang xa hoi. thi van tham thuc va ((dinh dau) OR (danh dau)) ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: toc sac ky nang xa hoi. thi van tham thuc va ((dinh dau) or (danh dau)) ((cua tre) or (cuu tre))*.