Perhaps you should try some spelling variations:
luyen thi » nguyen thi
han luyen » huan luyen, van luyen, nhan quyen
qui hoach » quy hoach
san luan » dan luan, tang luan, hang luan
vu hoach » quy hoach, thu hoach, ke hoach
luat tri » luat thi, luat thai, quan tri
su san » vu san, su can, tu san
su han » su phan, su hoan, su van

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((( su san luan chi ) or ( su han luyen thi ))) or ( ((vu hoach) OR (qui hoach)) luat tri ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((( su san luan chi ) OR ( su han luyen thi ))) OR ( ((vu hoach) OR (qui hoach)) luat tri )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((( su san luan chi ) or ( su han luyen thi ))) or ( ((vu hoach) OR (qui hoach)) luat tri ))".
• Adding a wildcard symbol may retrieve word variants: (((( su san luan chi ) or ( su han luyen thi ))) or ( ((vu hoach) OR (qui hoach)) luat tri ))*.