Perhaps you should try some spelling variations:
thanh trung » thanh tung
hien danh » thien danh, hien hanh, hien nhanh
trung vat » trung va, trung van, trong vat
trong dan » trong dang, trong san, trong tan
vat dung » van dung, va dung, viet dung
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: hoc hien danh - thanh trung vat dung ((trong dan) or (trong cac)) ((than tap) or (han tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien danh - thanh trung vat dung ((trong dan) OR (trong cac)) ((than tap) OR (han tap)).
• Adding a wildcard symbol may retrieve word variants: hoc hien danh - thanh trung vat dung ((trong dan) or (trong cac)) ((than tap) or (han tap))*.