Perhaps you should try some spelling variations:
trong manh » trong minh, trong anh, trong mach
mot chieu » doi chieu
trinh vat » trinh van, trinh luat, sinh vat
manh toan » thanh toan, anh tuan, tinh toan
ho chieu » theo chieu, hoc thieu, doi chieu
trinh va » trinh van, trinh ve, trinh vi
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 (mot chieu)) xanh - hanh ((trinh va) OR (trinh vat)) dung trong manh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (mot chieu)) xanh - hanh ((trinh va) OR (trinh vat)) dung trong manh toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (mot chieu)) xanh - hanh ((trinh va) OR (trinh vat)) dung trong manh toan cao".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (mot chieu)) xanh - hanh ((trinh va) OR (trinh vat)) dung trong manh toan cao*.