Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
cong ngang » cong quang, cong lang, cong nong
doi chieu » doc hieu, doi chi, ho chieu
trinh vat » trinh van, trinh luat, sinh vat
cong nhan » cong nhat, cong thanh, cong san
thanh tap » thanh lap, thanh tai, thanh tay
vat lang » va lang, van lang, vat mang

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) or (doi chieu)) xanh - hanh trinh vat lang ((cong ngang) OR (cong nhan)) thanh tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc thieu) OR (doi chieu)) xanh - hanh trinh vat lang ((cong ngang) OR (cong nhan)) thanh tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc thieu) or (doi chieu)) xanh - hanh trinh vat lang ((cong ngang) OR (cong nhan)) thanh tap".
• Adding a wildcard symbol may retrieve word variants: ((toc thieu) or (doi chieu)) xanh - hanh trinh vat lang ((cong ngang) OR (cong nhan)) thanh tap*.