Perhaps you should try some spelling variations:
thiet danh » thien danh, thien anh, thien dang
hoc thiet » hoc thieu, hoc thuyet, hoc hien
tinh quan » tinh quang, trinh quan, tin quan
dung cong » dung trong
manh toan » thanh toan, anh tuan, tinh toan
van toan » van tuan, van tan, van thanh
lien » bien, vien, tien

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 - hanh ((tinh quan) or (lien quan)) dung cong ((manh toan) or (van toan)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thiet danh - hanh ((tinh quan) OR (lien quan)) dung cong ((manh toan) OR (van toan)) tap.
• Adding a wildcard symbol may retrieve word variants: hoc thiet danh - hanh ((tinh quan) or (lien quan)) dung cong ((manh toan) or (van toan)) tap*.