Perhaps you should try some spelling variations:
hieu van » thien van, lieu va
cau thuc » cau truc, cuu thuc, can thuc
thuc dan » thuc hanh, hoc dan, thuc vat
dan tinh » doan tinh, dang tinh, dan trinh
hieu va » lieu va, hieu qua
tinh vi » trinh vi, tinh voi, tinh va
song y » dong y, song _, song ray
y nang » ky nang, ly nang, v nang
vi cua » vai cua, di cua
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat song y nang x hoi. ((((hieu ve) or (hieu van))) or (hieu va)) cau thuc dan tinh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat song y nang x hoi. ((((hieu ve) OR (hieu van))) OR (hieu va)) cau thuc dan tinh vi cua te.
• Adding a wildcard symbol may retrieve word variants: thuat song y nang x hoi. ((((hieu ve) or (hieu van))) or (hieu va)) cau thuc dan tinh vi cua te*.