Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu van
hieu va » lieu va, hieu qua
dan vai » dan va, dan tai, dan vat
xuc va » duc va, tuc va, luc va
va dan » ca dan, va dao, va dau
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky nang ma hoa. ((hieu ve) or (hieu va)) cam xuc va dan vai ((cua te) OR (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang ma hoa. ((hieu ve) OR (hieu va)) cam xuc va dan vai ((cua te) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang ma hoa. ((hieu ve) or (hieu va)) cam xuc va dan vai ((cua te) OR (cua tu))".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang ma hoa. ((hieu ve) or (hieu va)) cam xuc va dan vai ((cua te) OR (cua tu))*.