Perhaps you should try some spelling variations:
nguoi sach » nguoi san
thuat hanh » thuat thanh, thuat lanh, thuat hinh
hanh phap » danh phap, anh phap, han phap
nuoc sach » hoc sach, cuoc cach, cuon sach
nghiep tu » nghiep vu, nghiep vua, nghiep cua
nghien o » nghiep o, nghiep so, nghiep co
tu hoc » te hoc
o hoc » co hoc, mo hoc, so hoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( thuat hanh phap nghien o hoc ) or ( ((nuoc sach) OR (nguoi sach)) nghe nghiep tu hoc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( thuat hanh phap nghien o hoc ) OR ( ((nuoc sach) OR (nguoi sach)) nghe nghiep tu hoc )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( thuat hanh phap nghien o hoc ) or ( ((nuoc sach) OR (nguoi sach)) nghe nghiep tu hoc ))".
• Adding a wildcard symbol may retrieve word variants: (( thuat hanh phap nghien o hoc ) or ( ((nuoc sach) OR (nguoi sach)) nghe nghiep tu hoc ))*.