Perhaps you should try some spelling variations:
hanh trung » thanh trung, hanh trang, manh trung
chieu sang » chieu sach, chieu xanh, hieu lang
trung cap » truong cao, trung tam
cap thong » cap tong, chap thuong, phap thong
hieu van » hieu va, thien van, lieu va
tin toan » tinh toan, trinh toan, thien toan
nin toan » tinh toan

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) or (hieu van)) - hanh trung cap thong thong ((tin toan) or (nin toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sang) OR (hieu van)) - hanh trung cap thong thong ((tin toan) OR (nin toan)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sang) or (hieu van)) - hanh trung cap thong thong ((tin toan) or (nin toan)) cau*.