Perhaps you should try some spelling variations:
truong cao » truong dai
hoc thieu » toc thieu
trung cao » trung cap, trung co, trung ca
phan cong » thanh cong
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh 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) or (hoc hien)) xanh - hanh ((trung cao) OR (truong cao)) phan cong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (hoc hien)) xanh - hanh ((trung cao) OR (truong cao)) phan cong dan toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (hoc hien)) xanh - hanh ((trung cao) OR (truong cao)) phan cong dan toan cau".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (hoc hien)) xanh - hanh ((trung cao) OR (truong cao)) phan cong dan toan cau*.