Perhaps you should try some spelling variations:
quang trong » quang truong, quang trung, quang thong
thieu xanh » hieu manh, thien anh, thien danh
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh trinh » canh tranh, hanh chinh
trinh tuan » trinh quan, trinh toan, trinh luan
quan trong » gian trong
dung dan » dung dat, dung san, tung dan
dan cho » danh cho, san cho, dac cho

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 xanh) or (chieu xanh)) - hanh trinh tuan ((quang trong) OR (quan trong)) dung dan cho~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (chieu xanh)) - hanh trinh tuan ((quang trong) OR (quan trong)) dung dan cho.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (chieu xanh)) - hanh trinh tuan ((quang trong) OR (quan trong)) dung dan cho".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (chieu xanh)) - hanh trinh tuan ((quang trong) OR (quan trong)) dung dan cho*.