Perhaps you should try some spelling variations:
trinh quang » tinh quang, trinh quan, tranh quang
quang trung » truong trung
thieu xanh » chieu xanh, hieu manh, thien anh
hanh trinh » canh tranh, hanh chinh
hoc thieu » toc thieu, hoc hien
cong dan » cong tan, huong dan, cong dong
cong tac » cong ty
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 thieu xanh - hanh trinh quang trung ((cong dan) or (((cong san) OR (cong tac)))) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh trinh quang trung ((cong dan) OR (((cong san) OR (cong tac)))) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - hanh trinh quang trung ((cong dan) or (((cong san) OR (cong tac)))) toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh trinh quang trung ((cong dan) or (((cong san) OR (cong tac)))) toan cao*.