Perhaps you should try some spelling variations:
vien nganh » vien thanh
hanh trung » thanh trung, hanh trang, manh trung
trung tuan » trung thanh, trung tam, tran tuan
hieu xanh » chieu xanh, hieu manh, hieu nganh
tuan hang » tuan hoang, tuan bang, tuan dang
cong vang » cong lang, cong quang, cong ngang
hoang van » hang va
toan 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: doc ((hieu xanh) or (vien nganh)) - hanh trung tuan hang ((cong vang) or (hoang van)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu xanh) OR (vien nganh)) - hanh trung tuan hang ((cong vang) OR (hoang van)) toan ban.
• Adding a wildcard symbol may retrieve word variants: doc ((hieu xanh) or (vien nganh)) - hanh trung tuan hang ((cong vang) or (hoang van)) toan ban*.