Perhaps you should try some spelling variations:
thanh trung » thanh tung
hanh trang » canh tranh, hanh trinh, minh trang
thong cong » trong cong, tong cong, thong thong
hoc dieu » hoc thieu, hoc hien
ho chieu » theo chieu, hoc thieu, doi chieu
va thong » va thuong, va phuong, he thong
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cao » toan cao, thai cao, than cap

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 (ho chieu)) xanh - ((hanh trang) OR (thanh trung)) va thong cong dan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc dieu) OR (ho chieu)) xanh - ((hanh trang) OR (thanh trung)) va thong cong dan than cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc dieu) or (ho chieu)) xanh - ((hanh trang) OR (thanh trung)) va thong cong dan than cao".
• Adding a wildcard symbol may retrieve word variants: ((hoc dieu) or (ho chieu)) xanh - ((hanh trang) OR (thanh trung)) va thong cong dan than cao*.