Perhaps you should try some spelling variations:
tdinh trung » trinh trung, trinh truong, sinh trung
chieu sang » chieu sach, chieu xanh, hieu lang
dinh trung » sinh trung, dinh trong, kinh trung
tinh trung » trinh trung, sinh trung, tinh trang
doi chieu » doc hieu, doi chi, ho chieu
bang cong » dang cong, bang song, hang cong
cong san » cong tac
san than » sang than, san thanh, ban than
than cap » khan cap, thanh lap, thanh cac
va bang » va nang, va lang, va ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sang - ((dinh trung) or (((tdinh trung) OR (tinh trung)))) va bang cong san than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - ((dinh trung) OR (((tdinh trung) OR (tinh trung)))) va bang cong san than cap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sang - ((dinh trung) or (((tdinh trung) OR (tinh trung)))) va bang cong san than cap*".