Perhaps you should try some spelling variations:
thanh tung » thanh cong
hoc thieu » toc thieu, hoc hien
hoc thiet » hoc thuyet, hoc hien, toc thieu
dang cong » dung cong
ho thiet » hoa thiet, so thiet, khi thiet
tung cao » nung cao, truong cao, trung cap
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((ho thiet) OR (hoc thieu))) or (hoc thiet)) tach - thanh tung cao dang cong dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((ho thiet) OR (hoc thieu))) OR (hoc thiet)) tach - thanh tung cao dang cong dan toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((ho thiet) OR (hoc thieu))) or (hoc thiet)) tach - thanh tung cao dang cong dan toan ban".
• Adding a wildcard symbol may retrieve word variants: ((((ho thiet) OR (hoc thieu))) or (hoc thiet)) tach - thanh tung cao dang cong dan toan ban*.