Perhaps you should try some spelling variations:
thong trong » thuong trong, thong thong, thong thuong
chieu sang » chieu sach, chieu xanh, hieu lang
kinh toan » tinh toan, hinh toan, minh toan
ho chieu » theo chieu, hoc thieu, doi chieu
trung va » truong va, trang va, trung tam
trung ha » trung hoc, trung tam, trung cap
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sang - thanh ((trung va) or (trung ha)) thong trong kinh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - thanh ((trung va) OR (trung ha)) thong trong kinh toan ban.
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - thanh ((trung va) or (trung ha)) thong trong kinh toan ban*.