Perhaps you should try some spelling variations:
dan thiet » luan thiet, toan thiet, doan thien
hanh moi » thanh moi, hanh noi, hanh mot
cham xuc » chat xuc, cham soc, pham duc
sach ty » sach tu, sach thu, xach tay
moi dan » moi dang, hoi dan, doi dan
va hanh » van hanh, va thanh, va danh
hieu va » lieu va, hieu qua
cao hoi » cau hoi, co hoi, cao hoc

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 ty) or (sach y)) nang cao hoi. hieu va ((cham xuc) OR (cam xuc)) va hanh moi dan thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach y)) nang cao hoi. hieu va ((cham xuc) OR (cam xuc)) va hanh moi dan thiet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ty) or (sach y)) nang cao hoi. hieu va ((cham xuc) OR (cam xuc)) va hanh moi dan thiet".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) or (sach y)) nang cao hoi. hieu va ((cham xuc) OR (cam xuc)) va hanh moi dan thiet*.