Perhaps you should try some spelling variations:
khia canh » kho canh, thi canh
hang hang » nang hang, cang thang, hung thang
khi xanh » thi hanh, thi anh, thi oanh
kha nang » phap nang, ky nang, ki nang
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap
da nang » cam nang, cao nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((khi xanh) OR (khia canh)) - hang hang ((kha nang) or (da nang)) cong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((khi xanh) OR (khia canh)) - hang hang ((kha nang) OR (da nang)) cong dan toan cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((khi xanh) OR (khia canh)) - hang hang ((kha nang) or (da nang)) cong dan toan cau*".