Perhaps you should try some spelling variations:
nam thuc » nam thuoc, nam thu, nam tu
dan hanh » dang hanh, dan khanh, dan thanh
dau treo » dau tren, dau theo, dau tien
cau treo » cau theo, cau tren, cau triet
nang ro » nang co, nang ho, nang ra
hanh va » hang va, hanh vi
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
ro hoi » co hoi, o hoi, mo hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky nang ro hoi. lieu va ((nam thuc) or (am thuc)) dan hanh va ((dau treo) OR (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang ro hoi. lieu va ((nam thuc) OR (am thuc)) dan hanh va ((dau treo) OR (cau treo)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang ro hoi. lieu va ((nam thuc) or (am thuc)) dan hanh va ((dau treo) OR (cau treo))".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang ro hoi. lieu va ((nam thuc) or (am thuc)) dan hanh va ((dau treo) OR (cau treo))*.