Perhaps you should try some spelling variations:
nhung cong » thong cong, hang cong, nhung don
thuoc dieu » thuc dieu, hoc dieu, thuat dieu
theo dieu » theo tieu, theo chieu, he dieu
dung cong » dung trong
anh hang » anh hoang, anh hung, anh bang
tan toan » tan tran, tap toan, van toan
toan cao » toan ban, toan tap
hang ca » hang va, nang cao, hang tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo dieu) or (thuoc dieu)) hanh - anh hang ca ((nhung cong) OR (dung cong)) tan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo dieu) OR (thuoc dieu)) hanh - anh hang ca ((nhung cong) OR (dung cong)) tan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo dieu) or (thuoc dieu)) hanh - anh hang ca ((nhung cong) OR (dung cong)) tan toan cao".
• Adding a wildcard symbol may retrieve word variants: ((theo dieu) or (thuoc dieu)) hanh - anh hang ca ((nhung cong) OR (dung cong)) tan toan cao*.