Perhaps you should try some spelling variations:
quang trong » quang truong, quang trung, quan trong
hoc thuyet » hoc chuyen
thanh tran » thanh trang, thanh tra, thanh tuan
thanh toan » thanh hoa, thanh san, tinh toan
hoc thiet » hoc thieu, hoc hien, toc thieu
cong san » cong tac
san hang » san chang, ban hang, van hang
hang cau » hang dau, hang ca, nhung cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thiet) or (hoc thuyet)) anh - ((thanh tran) OR (thanh toan)) quang trong cong san hang cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thiet) OR (hoc thuyet)) anh - ((thanh tran) OR (thanh toan)) quang trong cong san hang cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thiet) or (hoc thuyet)) anh - ((thanh tran) OR (thanh toan)) quang trong cong san hang cau".
• Adding a wildcard symbol may retrieve word variants: ((hoc thiet) or (hoc thuyet)) anh - ((thanh tran) OR (thanh toan)) quang trong cong san hang cau*.