Perhaps you should try some spelling variations:
nghiem thuc » nghiem thuoc, nghiep thuc, nhiem thuc
thuoc sach » hoc sach, nuoc sach, thuat sach
thuc cong » thuoc cong, thu cong, chuc cong
thu sach » tu sach, thuat sach, thu hoach
cong hoc » dong hoc, cong hoa, cong coc
hoc hanh » hoc nhanh, hoc thanh, hoc anh
hanh hoa » thanh hoa, khanh hoa, hang hoa
dan phan » doan phan, dan chan, van phan
phan dan » phan dang, phan dau, nhan dan
hoi tai » hoc tai, hoi trac
hoi dan » hoa dan, hoc dan, hoi dap
hoc xa » hoc ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sach) or (thuoc sach)) hoi tai, nghiem thuc cong hoc hanh hoa hoc xa hoi dan phan dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (thuoc sach)) hoi tai, nghiem thuc cong hoc hanh hoa hoc xa hoi dan phan dan.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (thuoc sach)) hoi tai, nghiem thuc cong hoc hanh hoa hoc xa hoi dan phan dan*.