Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
cam duc » cao duc, pham duc, nam duoc
hanh di » hanh vi, hanh de, hang di
cu tren » tu tren, dua tren
ma hoi » mai hoi, xa hoi, ma hoa
di cu » di cau, di cua, di du

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cac ky nang ma hoi. hieu va ((cam duc) or (cam xuc)) van hanh di cu tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky nang ma hoi. hieu va ((cam duc) OR (cam xuc)) van hanh di cu tren.
• Adding a wildcard symbol may retrieve word variants: tu cac ky nang ma hoi. hieu va ((cam duc) or (cam xuc)) van hanh di cu tren*.