Perhaps you should try some spelling variations:
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
hoc thieu » toc thieu, hoc hien
hanh nhan » thanh nhan, danh nhan, anh nhan
manh toan » thanh toan, anh tuan, tinh toan
hoc dieu » hoc hien
nhan tao » nhan tai, nhan dan
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 dieu) or (hoc thieu)) xanh - hanh nhan tao ((nhung cong) OR (thong cong)) manh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc dieu) OR (hoc thieu)) xanh - hanh nhan tao ((nhung cong) OR (thong cong)) manh toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc dieu) or (hoc thieu)) xanh - hanh nhan tao ((nhung cong) OR (thong cong)) manh toan cao".
• Adding a wildcard symbol may retrieve word variants: ((hoc dieu) or (hoc thieu)) xanh - hanh nhan tao ((nhung cong) OR (thong cong)) manh toan cao*.