Perhaps you should try some spelling variations:
cong ngang » cong nhan, cong quang, cong lang
canh trang » canh tranh, hanh trang, banh trang
hoc thieu » toc thieu, hoc hien
cong vang » cong lang, cong quang, cong san
trang va » tran van, hang va
phan cau » phan dau, phan cac, phan tu
doi chi » doi khi
va dang » van dang, va nang, va lang

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 (doi chi)) xanh - canh trang va dang ((cong vang) OR (cong ngang)) phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (doi chi)) xanh - canh trang va dang ((cong vang) OR (cong ngang)) phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (doi chi)) xanh - canh trang va dang ((cong vang) OR (cong ngang)) phan cau".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (doi chi)) xanh - canh trang va dang ((cong vang) OR (cong ngang)) phan cau*.