Perhaps you should try some spelling variations:
thanh trung » thanh tung
cong ngang » cong nhan, cong quang, cong nong
mot chieu » doi chieu, ho chieu
trung lap » trung cap, truong lam, truong lop
cong lang » cong vang, cong luong, cong quang
doc hieu » toc thieu, hoc thieu, hoc hien
lap dung » ap dung, lan dung, cap dung
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((mot chieu) or (doc hieu)) xanh - thanh trung lap dung ((cong lang) or (cong ngang)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((mot chieu) OR (doc hieu)) xanh - thanh trung lap dung ((cong lang) OR (cong ngang)) toan tap.
• Adding a wildcard symbol may retrieve word variants: ((mot chieu) or (doc hieu)) xanh - thanh trung lap dung ((cong lang) or (cong ngang)) toan tap*.