Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
chiet tach » chieu sach
hoc chiet » hoc thiet, hoc nhiet, hoc hien
hanh mang » nhanh mang, hanh trang, nhanh lang
cua thong » cua thuong, cua khong, cua tong
mang cua » manh cua, dung cua, ban cua
cong tac » cong ty
tuan ban » tuan bang, toan ban, luan ban
quang » quan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chiet tach - hanh mang cua thong cong tac ((tuan ban) or (tran quang))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chiet tach - hanh mang cua thong cong tac ((tuan ban) OR (tran quang)).
• Adding a wildcard symbol may retrieve word variants: hoc chiet tach - hanh mang cua thong cong tac ((tuan ban) or (tran quang))*.