Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
chieu sang » chieu sach, chieu xanh, nhieu tang
trong hung » trong nhung, trong phung, trong rung
thang toan » thang thanh, hang ton, thang tien
thanh toan » thanh hoa, thanh san, tinh toan
hieu lang » hieu quang, nhieu tang, hieu van
trinh vat » trinh van, trinh luat, sinh vat
vat trong » viet trong, cay trong, dot trong

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoi ((chieu sang) OR (hieu lang)) - hanh trinh vat trong hung ((thang toan) or (thanh toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoi ((chieu sang) OR (hieu lang)) - hanh trinh vat trong hung ((thang toan) OR (thanh toan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoi ((chieu sang) OR (hieu lang)) - hanh trinh vat trong hung ((thang toan) or (thanh toan)) cau".
• Adding a wildcard symbol may retrieve word variants: hoi ((chieu sang) OR (hieu lang)) - hanh trinh vat trong hung ((thang toan) or (thanh toan)) cau*.