Perhaps you should try some spelling variations:
luyen thi » nguyen thi
han luyen » huan luyen, van luyen, nhan quyen
qui hoach » quy hoach
luat thai » luat thi, luat thue, luat phap
san luan » dan luan, tang luan, hang luan
vu hoach » quy hoach, thu hoach, ke hoach
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 thai ))~.
• 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 thai )).
• Adding a wildcard symbol may retrieve word variants: (((( su san luan chi ) or ( su han luyen thi ))) or ( ((vu hoach) or (qui hoach)) luat thai ))*.