Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh thang » nhanh thang, thanh thang, hanh trang
chuc danh » chuc nganh, thuc hanh, chuc nang
cong vang » cong lang, cong quang, cong ngang
thang va » hang va, trang va, thong va
vang tan » van tan, tang tan, vang tao
chu han » chu van
tan ban » toan ban, tang ban, van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chuc danh) or (chu han)) - hanh thang va nhung cong vang tan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chuc danh) OR (chu han)) - hanh thang va nhung cong vang tan ban*.