Perhaps you should try some spelling variations:
hang cong » dang cong, hang nong, bang cong
theo cuu » theo chu, khao cuu, thao cua
anh tang » anh bang, anh dang, anh nang
anh dung » anh dong, anh huong, sach dung
cua hang » cua dang, cua nhung, cua cong
cong dan » cong san, cong tan, huong dan
than tap » toan tap, phan tap, than cap
han tap » han tai, toan tap, nhan tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo cuu van - ((anh tang) or (anh dung)) cua hang cong dan ((than tap) OR (han tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo cuu van - ((anh tang) OR (anh dung)) cua hang cong dan ((than tap) OR (han tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo cuu van - ((anh tang) or (anh dung)) cua hang cong dan ((than tap) OR (han tap))".
• Adding a wildcard symbol may retrieve word variants: theo cuu van - ((anh tang) or (anh dung)) cua hang cong dan ((than tap) OR (han tap))*.