Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
hanh trang » thanh trung, hanh trinh, minh trang
thanh tung » thanh cong
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
cua nhung » va nhung
cong san » cong tac
san than » sang than, san thanh, ban than
than cao » toan cao, thai cao, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu sach - ((((hanh trang) or (canh tranh))) or (thanh tung)) cua nhung cong san than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - ((((hanh trang) OR (canh tranh))) OR (thanh tung)) cua nhung cong san than cao.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - ((((hanh trang) or (canh tranh))) or (thanh tung)) cua nhung cong san than cao*.