Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hanh trung » thanh trung, hanh trang, manh trung
hoc chieu » hoc thieu, ho chieu, hoc hien
cap dung » cao dung, chan dung, cach dung
cong san » cong tac
toan cau » toan cao, toan tap, toan tai
toan ban » van ban
ap dung » xay dung, van dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu sang - hanh trung ((cap dung) or (ap dung)) cong san ((toan cau) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sang - hanh trung ((cap dung) OR (ap dung)) cong san ((toan cau) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sang - hanh trung ((cap dung) or (ap dung)) cong san ((toan cau) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: hoc chieu sang - hanh trung ((cap dung) or (ap dung)) cong san ((toan cau) OR (toan ban))*.