Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
trinh toan » tinh toan, thanh toan, trinh quan
nhung cong » dung cong, thong cong, hang cong
trinh van » trinh quan, dinh van
trinh han » trinh quan
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
chan cau » phan cau, can cau, chinh cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu xanh - canh ((((trinh van) OR (trinh toan))) or (trinh han)) nhung cong dan chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu xanh - canh ((((trinh van) OR (trinh toan))) OR (trinh han)) nhung cong dan chan cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc thieu xanh - canh ((((trinh van) OR (trinh toan))) or (trinh han)) nhung cong dan chan cau*".