Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hoc thiet » hoc thieu, hoc thuyet, hoc hien
ho chiet » ho chieu, ho thiet, hoa thiet
cong dan » cong san, cong tan, huong dan
dan chay » dan chan, san chay, toan chay
chay cao » cay cao, chat cao, nha cao
manh va » hanh va, anh va, minh va

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

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