Perhaps you should try some spelling variations:
thuat lanh » thuat lap, thuat san
van dinh » van minh, van dich, xuan dinh
lanh ty » lanh tu, canh tay, lanh tho
xang xa » lang xa, mang xa, ang xa
hieu ve » hieu van
hieu va » lieu va, hieu qua
cam duc » cam xuc, cao duc, pham duc
va dinh » va kinh, va tinh, vu dinh
vi luu » vi lua
tru » truc

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat lanh ty xang xa hoi. ((hieu ve) or (hieu va)) cam duc ((va dinh) OR (van dinh)) vi luu tru~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat lanh ty xang xa hoi. ((hieu ve) OR (hieu va)) cam duc ((va dinh) OR (van dinh)) vi luu tru.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat lanh ty xang xa hoi. ((hieu ve) or (hieu va)) cam duc ((va dinh) OR (van dinh)) vi luu tru".
• Adding a wildcard symbol may retrieve word variants: thuat lanh ty xang xa hoi. ((hieu ve) or (hieu va)) cam duc ((va dinh) OR (van dinh)) vi luu tru*.