Perhaps you should try some spelling variations:
thuat san » thuat toan, thuat song, thuat lanh
cau phuc » cau truc, chau phu, huu phuc
nang cau » nang cao, hang cau, nang dau
hieu ve » hieu van
hieu va » lieu va, hieu qua
phuc va » phuc vu, thuc va, chuc va
va hanh » van hanh, va thanh, va danh
ly nang » ky nang, ly hang, ly vang
vai dau » van dau, xvii dau
san ly » van ly, ban ly
va dau » va dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat san ly nang cau hoi. ((hieu ve) or (hieu va)) cau phuc va hanh ((vai dau) OR (va dau)) tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat san ly nang cau hoi. ((hieu ve) OR (hieu va)) cau phuc va hanh ((vai dau) OR (va dau)) tren*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat san ly nang cau hoi. ((hieu ve) or (hieu va)) cau phuc va hanh ((vai dau) OR (va dau)) tren*".