Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hien danh » thien danh, hien hanh, hien nhanh
san thanh » ban thanh, van thanh, tan thanh
dan thanh » dang thanh, danh thanh, ban thanh
son thanh » ban thanh, van thanh
trinh va » trinh van, trinh vat, trinh ve
va dung » van dung, va duong, vat dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien danh - hanh trinh va dung trong ((((san thanh) OR (dan thanh))) or (son thanh)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien danh - hanh trinh va dung trong ((((san thanh) OR (dan thanh))) OR (son thanh)) cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien danh - hanh trinh va dung trong ((((san thanh) OR (dan thanh))) or (son thanh)) cao*".