Perhaps you should try some spelling variations:
luan trong » quan trong, luat trong, luan tuong
hoc thieu » toc thieu, hoc hien
hanh tang » hanh trang, anh tang, hanh tung
hanh mang » nhanh mang, hanh trang, nhanh lang
ho chieu » theo chieu, doi chieu, mot chieu
cong tam » cong tac, cong tan, cong nam
tam toan » tap toan, tam than, pham toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (hoc thieu)) xanh - ((hanh tang) or (hanh mang)) luan trong cong tam toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) xanh - ((hanh tang) OR (hanh mang)) luan trong cong tam toan ban.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc thieu)) xanh - ((hanh tang) or (hanh mang)) luan trong cong tam toan ban*.