Perhaps you should try some spelling variations:
tru nang » tra nang, tri nang, truc nano
va dinh » van dinh, va kinh, va tinh
hieu va » lieu va, hieu qua
tu nang » tu nong, tu nano, tu lang
cam duc » cam xuc, cao duc, pham duc
va danh » va dan, va hanh, dia danh
vi cua » vai cua, di cua
va cam » va cham, va cac, va cao
cua te » cua tu

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: thuat toan ((tu nang) OR (tru nang)) ma hoa. hieu va cam duc ((va danh) OR (va dinh)) vi cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat toan ((tu nang) OR (tru nang)) ma hoa. hieu va cam duc ((va danh) or (va dinh)) vi cua te~".
• Adding a wildcard symbol may retrieve word variants: thuat toan ((tu nang) OR (tru nang)) ma hoa. hieu va cam duc ((va danh) or (va dinh)) vi cua te*.