Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
thiet tach » chiet tach, thien hach, thuat tach
hoc thiet » hoc thieu, hoc thuyet, hoc hien
hanh manh » hanh mang, lanh manh, hoang manh
cua nhung » va nhung
manh cua » doanh cua, ban cua
cong van » cong vang, cong san, song van
chat bao » chat ban, thuat bao, chat va

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 tach - hanh manh cua nhung cong van ((chat bao) OR (nhat ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thiet tach - hanh manh cua nhung cong van ((chat bao) OR (nhat ban))".
• Adding a wildcard symbol may retrieve word variants: hoc thiet tach - hanh manh cua nhung cong van ((chat bao) OR (nhat ban))*.