Perhaps you should try some spelling variations:
thuong cao » thong cao, thuong chau, thuong mai
truong cao » truong dai
tieu tinh » trieu tinh, tieu trinh, lieu tinh
dung cong » dung trong
cong van » cong vang, cong san, song van
than tap » toan tap, han tap, than cap
phan tap » phan lap, han tap, pha 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 tieu tinh - anh ((thuong cao) OR (truong cao)) dung cong van ((than tap) or (phan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu tinh - anh ((thuong cao) OR (truong cao)) dung cong van ((than tap) OR (phan tap))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu tinh - anh ((thuong cao) OR (truong cao)) dung cong van ((than tap) or (phan tap))*".