Perhaps you should try some spelling variations:
trinh quan » tinh quang, trinh luat, trinh han
hoc thieu » toc thieu, hoc hien
trong tan » trong quan, trong cac, trong ca
ho chieu » theo chieu, doi chieu, mot chieu
tinh cua » trinh cua, sinh cua, tinh chat
tan toan » tan tran, tap toan, 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: ((ho chieu) or (hoc thieu)) xanh - than ((tinh cua) or (trinh quan)) dung trong tan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) xanh - than ((tinh cua) OR (trinh quan)) dung trong tan toan cau.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc thieu)) xanh - than ((tinh cua) or (trinh quan)) dung trong tan toan cau*.