Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hoc thiet » hoc thieu, hoc thuyet, hoc hien
ho chiet » ho chieu, hoa thiet, hoc nhiet
ho thiet » hoa thiet, so thiet, hoc thieu
tranh va » tranh van, trang va, trinh va
cong tan » cong tac, cong san, cong thanh
tan phan » toan phan, than phan, van phan
phan cau » phan dau, phan cac, phan tu

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 (((ho thiet) OR (hoc thiet)))) tach - canh tranh va nhung cong tan phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chiet) OR (((ho thiet) OR (hoc thiet)))) tach - canh tranh va nhung cong tan phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chiet) or (((ho thiet) OR (hoc thiet)))) tach - canh tranh va nhung cong tan phan cau".
• Adding a wildcard symbol may retrieve word variants: ((ho chiet) or (((ho thiet) OR (hoc thiet)))) tach - canh tranh va nhung cong tan phan cau*.