Perhaps you should try some spelling variations:
tran hoang » tran hong, quan hoang, tran quang
cong luong » cong thuong, nang luong, cong dong
trinh han » trinh quan
luong van » luong va, duong van, luong vat
theo chu » theo chieu, cho chu, chao chu
chu xanh » chu manh, chieu xanh, chua xang
van toan » van tuan, van tan, van thanh
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chu xanh - ((trinh han) or (tran hoang)) cua cong luong van toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu xanh - ((trinh han) OR (tran hoang)) cua cong luong van toan cau*.