Perhaps you should try some spelling variations:
hanh hai » thanh hai, nhanh hai, hang hai
te sach » toc sach
cao hoi » cau hoi, co hoi, cao hoc
hieu ve » hieu van
hieu va » lieu va, hieu qua
cam duc » cam xuc, cao duc, pham duc
va hanh » van hanh, va thanh, va danh
y nang » ky nang, ly nang, v nang
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: te sach y nang cao hoi. ((hieu ve) OR (hieu va)) cam duc va hanh hai ((cua te) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang cao hoi. ((hieu ve) OR (hieu va)) cam duc va hanh hai ((cua te) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang cao hoi. ((hieu ve) OR (hieu va)) cam duc va hanh hai ((cua te) or (cua tu))".
• Adding a wildcard symbol may retrieve word variants: te sach y nang cao hoi. ((hieu ve) OR (hieu va)) cam duc va hanh hai ((cua te) or (cua tu))*.