Perhaps you should try some spelling variations:
thiet yeu » thiet ke
ganh nang » anh nang, nganh nong, van nang
phan tong » phan trong, phan cong, han tong
tong vang » tong van, cong vang, trong van
vang toan » van toan, dang toan, quang toan
theo yeu » theo tieu, theo chu
nang cua » mang cua, hang cua, nang dua
cua phan » cua nhan, cua phap, cua han
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: ((theo yeu) or (thiet yeu)) tinh - ganh nang cua phan tong vang toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo yeu) OR (thiet yeu)) tinh - ganh nang cua phan tong vang toan cau.
• Adding a wildcard symbol may retrieve word variants: ((theo yeu) or (thiet yeu)) tinh - ganh nang cua phan tong vang toan cau*.