Perhaps you should try some spelling variations:
vien chat » van chat, vien cac, vien cao
hieu vien » hieu hien, hieu viec, thieu nien
chat xuc » chat huu, cam xuc, chao xu
ban hanh » ban hang
cua viet » ca viet, cua vat, cua dieu
tu sach » thu sach, te sach, tu cach
su sach » so sach, vu sach
nang ma » tang ma, sang ma, nang cao
xuc ban » duc ban, cuc ban, quoc ban

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) OR (su sach)) ky nang ma hoa. hieu vien chat xuc ban hanh vi ((cua viet) or (hoa viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ky nang ma hoa. hieu vien chat xuc ban hanh vi ((cua viet) OR (hoa viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (su sach)) ky nang ma hoa. hieu vien chat xuc ban hanh vi ((cua viet) or (hoa viet))".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (su sach)) ky nang ma hoa. hieu vien chat xuc ban hanh vi ((cua viet) or (hoa viet))*.