Perhaps you should try some spelling variations:
trinh quan » tinh quang, trinh luat, trinh han
mot chieu » doi chieu, ho chieu
hoc thieu » toc thieu, hoc hien
trinh cua » tinh cua, trinh luat, trinh luan
cong tan » cong tac, cong san, cong thanh
tan phan » toan phan, than phan, van phan
phan tap » phan lap, han tap, pha tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((mot chieu) or (hoc thieu)) xanh - hanh ((trinh cua) OR (trinh quan)) trong cong tan phan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((mot chieu) OR (hoc thieu)) xanh - hanh ((trinh cua) OR (trinh quan)) trong cong tan phan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((mot chieu) or (hoc thieu)) xanh - hanh ((trinh cua) OR (trinh quan)) trong cong tan phan tap".
• Adding a wildcard symbol may retrieve word variants: ((mot chieu) or (hoc thieu)) xanh - hanh ((trinh cua) OR (trinh quan)) trong cong tan phan tap*.