Perhaps you should try some spelling variations:
nhanh thang » nhanh thanh, nhanh quang, hanh trang
thanh hang » thanh hoang, thanh thang, tranh hang
nhung cong » dung cong, thong cong, hang cong
cua nhung » va nhung
hoc dieu » hoc thieu, hoc hien
cong van » cong vang, cong san, song van
van bao » van ban, van dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc dieu hanh - ((thanh hang) or (nhanh thang)) cua nhung cong van bao cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc dieu hanh - ((thanh hang) OR (nhanh thang)) cua nhung cong van bao cao.
• Adding a wildcard symbol may retrieve word variants: hoc dieu hanh - ((thanh hang) or (nhanh thang)) cua nhung cong van bao cao*.