Perhaps you should try some spelling variations:
trong manh » trong minh, trong anh, trong mach
manh trong » manh truong, manh trung, manh tuong
hoc chieu » hoc thieu, ho chieu, hoc dieu
anh trong » anh thuong, dinh trong, lang trong
manh toan » thanh toan, anh tuan, tinh toan
vat dung » van dung, va dung, viet dung
toan cau » toan cao, toan ban, toan tap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chieu) OR (hoc hien)) xanh - ((manh trong) OR (anh trong)) vat dung trong manh toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc chieu) OR (hoc hien)) xanh - ((manh trong) or (anh trong)) vat dung trong manh toan cau~".
• Adding a wildcard symbol may retrieve word variants: ((hoc chieu) OR (hoc hien)) xanh - ((manh trong) or (anh trong)) vat dung trong manh toan cau*.