Perhaps you should try some spelling variations:
thuat san » thuat toan, thuat song, thuat lanh
van hanh » van thanh, ban hanh, van anh
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
cac dat » cac dan, cac dai, cac dac
san ky » sang ky, van ky, dan ky
ma hoi » mai hoi, xa hoi, ma hoa
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat san ky nang ma hoi. hieu va ((cac dat) or (cai dat)) van hanh vi cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat san ky nang ma hoi. hieu va ((cac dat) OR (cai dat)) van hanh vi cua vat.
• Adding a wildcard symbol may retrieve word variants: thuat san ky nang ma hoi. hieu va ((cac dat) or (cai dat)) van hanh vi cua vat*.