Perhaps you should try some spelling variations:
thuat ban » thuat bai, thuat bao, thuat san
dang xay » dang van, van xay
cam truc » cau truc, nam truc, lam truoc
lang xa » lang ha, lang van
truc va » thuc va, thuc vat, trung va
va danh » va dinh, va dan, va hanh
hieu va » lieu va, hieu qua
ban ky » van ky, dan ky
va cam » va cham, va cac, va cao
vi cua » vai cua
di cua » dai cua, doi cua, de 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 ban ky ((lang xa) or (dang xay)) hoi. hieu va cam truc va danh ((vi cua) or (di cua)) viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat ban ky ((lang xa) OR (dang xay)) hoi. hieu va cam truc va danh ((vi cua) OR (di cua)) viet.
• Adding a wildcard symbol may retrieve word variants: thuat ban ky ((lang xa) or (dang xay)) hoi. hieu va cam truc va danh ((vi cua) or (di cua)) viet*.