Perhaps you should try some spelling variations:
thiet danh » thien danh, thien anh, tiep danh
thien dang » thien bang, thien danh, thien nang
thanh tung » thanh cong
phat nhung » pha nhung, phai nhuong, thuat nhung
nhung cong » dung cong, thong cong, hang cong
tung phat » trung phat, hung phat, tung pham
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thiet danh) OR (thien dang)) - thanh tung phat nhung cong dan toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thiet danh) OR (thien dang)) - thanh tung phat nhung cong dan toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((thiet danh) OR (thien dang)) - thanh tung phat nhung cong dan toan cao*.