Perhaps you should try some spelling variations:
truong cong » trong cong, truong dong, truong long
hanh trang » thanh trung, canh tranh, hanh trinh
trinh quan » tinh quang, trinh luat, trinh han
hoc thieu » toc thieu
hanh tang » anh tang, hanh mang, hanh tung
cong cong » cong dong, trong cong, dung cong
quan tap » quan tai, quan lap, quan tam

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thieu) or (hoc hien)) xanh - ((hanh tang) OR (hanh trang)) truong cong cong trinh quan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (hoc hien)) xanh - ((hanh tang) OR (hanh trang)) truong cong cong trinh quan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (hoc hien)) xanh - ((hanh tang) OR (hanh trang)) truong cong cong trinh quan tap".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (hoc hien)) xanh - ((hanh tang) OR (hanh trang)) truong cong cong trinh quan tap*.