Perhaps you should try some spelling variations:
hung thang » cang thang, hung tran
nhung cong » thong cong, hang cong, nhung don
nang hang » nang sang, hang hang, cang thang
dung cong » dung trong
theo chu » theo chieu, cho chu, chao chu
chu xanh » chu manh, chieu xanh, chua xang
tan toan » tan tran, tap toan, van toan
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 - ((hung thang) or (nang hang)) va ((nhung cong) OR (dung cong)) tan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu xanh - ((hung thang) OR (nang hang)) va ((nhung cong) OR (dung cong)) tan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chu xanh - ((hung thang) or (nang hang)) va ((nhung cong) OR (dung cong)) tan toan cao".
• Adding a wildcard symbol may retrieve word variants: theo chu xanh - ((hung thang) or (nang hang)) va ((nhung cong) OR (dung cong)) tan toan cao*.