Perhaps you should try some spelling variations:
phan luyen » phan quyen, phan tuyen, phap luyen
luyen thi » nguyen thi
san luan » dan luan, tang luan, hang luan
luan thi » luan chi, luan thiet, luong thi
vu hoach » thu hoach, qui hoach, ke hoach
luat thi » luat thai, luat thu, luat thue
su phan » su pham, su phat, so phan
su san » vu san, su can, su han

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 thi ) or ( su phan luyen thi ))) or ( ((vu hoach) or (quy hoach)) luat thi ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((( su san luan thi ) OR ( su phan luyen thi ))) OR ( ((vu hoach) OR (quy hoach)) luat thi )).
• Adding a wildcard symbol may retrieve word variants: (((( su san luan thi ) or ( su phan luyen thi ))) or ( ((vu hoach) or (quy hoach)) luat thi ))*.