Perhaps you should try some spelling variations:
chiet tach » chieu sach
hanh trinh » canh tranh, hanh chinh
hoc chiet » hoc thiet, hoc nhiet, hoc hien
trinh han » trinh quan
dung cong » dung trong
han dung » chan dung, han duong, hanh dung
san tran » tan tran, dang tran, san trung
ban tran » ban trang, tan tran, ban than

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 trinh han dung cong ((san tran) OR (ban tran)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chiet tach - hanh trinh han dung cong ((san tran) OR (ban tran)) cau*".