Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
cong quang » luong quang, thong quang, duong quang
quang toan » quang tuan, quang tran, quang doan
thi hang » thi hanh, thi nang, thi hong
ve trong » le trong, ke trong, te trong
le trung » do trung
toan cao » toan ban, toan tap
doi thi » doi thoi, do thi, doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi thi hang - hanh trinh ((ve trong) or (le trung)) cong quang toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi thi hang - hanh trinh ((ve trong) OR (le trung)) cong quang toan cao*.