Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
nhieu tang » hieu lang, nhiet nang
hanh trang » canh tranh, hanh trinh, minh trang
nhung cong » dung cong, thong cong, hang cong
cua nhung » va nhung
cong van » cong vang, cong san, song van
van toan » van tuan, van tan, van thanh
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: hoc ((chieu sang) or (nhieu tang)) - ((hanh trang) OR (thanh trung)) cua nhung cong van toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sang) OR (nhieu tang)) - ((hanh trang) OR (thanh trung)) cua nhung cong van toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu sang) or (nhieu tang)) - ((hanh trang) OR (thanh trung)) cua nhung cong van toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sang) or (nhieu tang)) - ((hanh trang) OR (thanh trung)) cua nhung cong van toan cao*.