Perhaps you should try some spelling variations:
hoc thieu » toc thieu, hoc hien
cong vang » cong lang, cong quang, cong ngang
ho chieu » theo chieu, doi chieu, mot chieu
tranh va » tranh van, trang va, trinh va
cong van » cong san, song van, cong tan
tuan cau » toan cau, quan cau, tuan cu
va lang » va nang, hoa lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (hoc thieu)) xanh - canh tranh va lang ((cong van) OR (cong vang)) tuan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) xanh - canh tranh va lang ((cong van) OR (cong vang)) tuan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (hoc thieu)) xanh - canh tranh va lang ((cong van) OR (cong vang)) tuan cau".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc thieu)) xanh - canh tranh va lang ((cong van) OR (cong vang)) tuan cau*.