Perhaps you should try some spelling variations:
thuat san » thuat toan, thuat song, thuat lanh
toc sach » hoc sach, doc sach, thuoc sach
sinh cua » manh cua, dinh cuu
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
sinh va » sinh vat, tinh va, dinh van
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, luc va
va anh » van anh, va danh, va hanh

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) or (toc sach)) ky nang ma hoa. hieu va cam xuc va anh ((sinh cua) OR (sinh va)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuat san) OR (toc sach)) ky nang ma hoa. hieu va cam xuc va anh ((sinh cua) OR (sinh va)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuat san) or (toc sach)) ky nang ma hoa. hieu va cam xuc va anh ((sinh cua) OR (sinh va)) tre".
• Adding a wildcard symbol may retrieve word variants: ((thuat san) or (toc sach)) ky nang ma hoa. hieu va cam xuc va anh ((sinh cua) OR (sinh va)) tre*.