Perhaps you should try some spelling variations:
trdinh trong » trinh trong, tranh trong, chinh trong
tdinh trong » trinh trong, chinh trong, sinh trong
thieu xanh » chieu xanh, hieu manh, thien anh
dinh trong » sinh trong, chinh trong, dinh thuong
hoc thieu » toc thieu, hoc hien
qua trong » quan trong, qua trinh, qua song
cong ban » cong bang, cong san, cong tan
ban toan » bai toan, ban than, van toan
toan cau » toan cao, toan ban, toan tap

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 - ((((tdinh trong) or (dinh trong))) or (trdinh trong)) qua trong cong ban toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - ((((tdinh trong) OR (dinh trong))) OR (trdinh trong)) qua trong cong ban toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - ((((tdinh trong) or (dinh trong))) or (trdinh trong)) qua trong cong ban toan cau*.