Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
luan dao » luan dac, lua dao, luan bao
toc hanh » hoc hanh, doc hanh, tuc hanh
trinh co » trinh do, trinh cong, trinh hoa
te luan » tu luan, te quan
dao cao » dao tao, bao cao, tao cao
cao khi » cao khai, cao thi, cac khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( te luan dao cao khi đong luc ) or ( toc hanh trinh co khi đong luc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( te luan dao cao khi đong luc ) OR ( toc hanh trinh co khi đong luc )).
• Adding a wildcard symbol may retrieve word variants: (( te luan dao cao khi đong luc ) or ( toc hanh trinh co khi đong luc ))*.