Perhaps you should try some spelling variations:
cong ngang » cong nhan, cong quang, cong lang
ngang tuan » quang tuan, hoang tuan, nganh toan
hieu lang » chieu sang, hieu quang, nhieu tang
hang hang » nang hang, cang thang, hung thang
va phuong » va thuong, cac phuong
doi hieu » doi chieu, doc hieu, doi hien
va thong » va thuong, he thong, va thanh
tuan cau » toan cau, quan cau, tuan cu
va cong » tai cong, cua cong

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi hieu lang - hang hang ((((va thong) OR (va cong))) or (va phuong)) cong ngang tuan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi hieu lang - hang hang ((((va thong) OR (va cong))) OR (va phuong)) cong ngang tuan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi hieu lang - hang hang ((((va thong) OR (va cong))) or (va phuong)) cong ngang tuan cau".
• Adding a wildcard symbol may retrieve word variants: doi hieu lang - hang hang ((((va thong) OR (va cong))) or (va phuong)) cong ngang tuan cau*.