Perhaps you should try some spelling variations:
thuat san » thuat toan, thuat song, thuat lanh
cau phuc » chau phu, huu phuc, van phuc
dau tren » dau tien, dat tren, dau tieng
nang cau » nang cao, hang cau, nang dau
hieu ve » hieu van
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
hanh va » hang va, hanh vi
san ky » sang ky, van ky, dan ky
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 ky nang cau hoi. ((hieu ve) or (hieu va)) ((cau phuc) OR (cau truc)) va hanh va dau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat san ky nang cau hoi. ((hieu ve) OR (hieu va)) ((cau phuc) OR (cau truc)) va hanh va dau tren*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat san ky nang cau hoi. ((hieu ve) or (hieu va)) ((cau phuc) OR (cau truc)) va hanh va dau tren*".