Perhaps you should try some spelling variations:
hieu hien » bieu hien, dieu hien, chieu chien
hien bach » vien bach, thien hach, hien hanh
bach tuoc » sach duoc, sach nuoc
hoa lang » hoa dan, hoa van
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
va lang » va nang
nang xa » nang x, lang xa, nang ma
sac ky » cac ky, sai ky
tu sac » tu sach, tu cac, tu san

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 xa hoi. hieu hien bach tuoc ((va lang) OR (hoa lang)) va ((cuu tre) or (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang xa hoi. hieu hien bach tuoc ((va lang) OR (hoa lang)) va ((cuu tre) OR (cua tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang xa hoi. hieu hien bach tuoc ((va lang) OR (hoa lang)) va ((cuu tre) or (cua tre))".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang xa hoi. hieu hien bach tuoc ((va lang) OR (hoa lang)) va ((cuu tre) or (cua tre))*.