Perhaps you should try some spelling variations:
nhung tuong » nhung huong, nhung phuong, hung vuong
hanh trinh » canh tranh, hanh chinh
theo chieu » theo tieu, ho chieu, theo chu
chieu han » chieu sang, chieu xanh, phieu phan
hanh tang » hanh trang, anh tang, hanh mang
cua nhung » va nhung
tuong van » truong van, trong van, duong van
than cau » toan cau, than cap, thanh chau
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu han - ((hanh tang) or (hanh trinh)) cua nhung tuong van ((than cau) OR (phan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu han - ((hanh tang) OR (hanh trinh)) cua nhung tuong van ((than cau) OR (phan cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu han - ((hanh tang) or (hanh trinh)) cua nhung tuong van ((than cau) OR (phan cau))".
• Adding a wildcard symbol may retrieve word variants: theo chieu han - ((hanh tang) or (hanh trinh)) cua nhung tuong van ((than cau) OR (phan cau))*.