Perhaps you should try some spelling variations:
trong hach » trong mach, trong cach, trong hanh
doi chieu » doc hieu, doi chi, mot chieu
trang cua » tranh cua, trung cua, thang cua
hach toan » thanh toan, manh toan
ho chieu » theo chieu, hoc thieu, mot chieu
tang cua » mang cua, hang cua, tang luan
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: ((doi chieu) or (ho chieu)) xanh - hanh ((trang cua) OR (tang cua)) dung trong hach toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (ho chieu)) xanh - hanh ((trang cua) OR (tang cua)) dung trong hach toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) or (ho chieu)) xanh - hanh ((trang cua) OR (tang cua)) dung trong hach toan cau".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (ho chieu)) xanh - hanh ((trang cua) OR (tang cua)) dung trong hach toan cau*.