Perhaps you should try some spelling variations:
danh hai » dang hai, lanh hai, manh hai
te sach » toc sach
sach ky » sac ky, sach y, sach ty
hieu ve » hieu van
hieu va » lieu va, hieu qua
va danh » va dinh, va dan, va hanh
xuc va » duc va, tuc va, luc va
cua tu » cua tuc, cua su, cua te
cua cu » cua chu, cua cau, cua su

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

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