Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, thi chieu
anh trong » anh thuong, dinh trong, lang trong
trong tac » trong cac, tuong tac, trong tan
theo chu » cho chu, chao chu, theo yeu
tac dung » sach dung, xay dung, tin dung
cong van » cong vang, song van, cong tan
cong san » cong tac
than tap » toan tap, han tap, phan tap

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

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