Perhaps you should try some spelling variations:
nghiem thuc » nghiem thuoc, nghiep thuc, nhiem thuc
thuc cong » thuoc cong, thu cong, chuc cong
toc sach » doc sach, thuoc sach, nuoc sach
hoc sach » hoc sinh, hoc cac, hoc anh
cong toc » cong tac, cong coc, cong uoc
san khoa » toan khoa, hang khoa, da khoa
khoa hoc » hoa hoc
gian dan » gian lang
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: ((toc sach) or (hoc sach)) hoc tap, nghiem thuc cong toc san khoa hoc xa hoi dan gian dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (hoc sach)) hoc tap, nghiem thuc cong toc san khoa hoc xa hoi dan gian dan.
• Adding a wildcard symbol may retrieve word variants: ((toc sach) or (hoc sach)) hoc tap, nghiem thuc cong toc san khoa hoc xa hoi dan gian dan*.