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

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) or (hieu va)) - ((hanh trang) or (thanh trung)) cua nhung cong san than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sach) OR (hieu va)) - ((hanh trang) OR (thanh trung)) cua nhung cong san than cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sach) or (hieu va)) - ((hanh trang) or (thanh trung)) cua nhung cong san than cao*.