Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
hanh vai » hanh vi, hanh va, hanh van
dang xay » dang van, van xay
cam duc » cam xuc, cao duc, pham duc
hieu va » lieu va, hieu qua
lang xa » lang ha, lang van
sac ky » cac ky, sai ky
va cam » va cham, va cac, va cao
tu sac » tu sach, tu cac, tu san
chua » cua, chu

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 ((lang xa) OR (dang xay)) hoi. hieu va cam duc va ((hanh vai) or (hanh tai)) sua chua~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky ((lang xa) OR (dang xay)) hoi. hieu va cam duc va ((hanh vai) OR (hanh tai)) sua chua.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky ((lang xa) OR (dang xay)) hoi. hieu va cam duc va ((hanh vai) or (hanh tai)) sua chua".
• Adding a wildcard symbol may retrieve word variants: tu sac ky ((lang xa) OR (dang xay)) hoi. hieu va cam duc va ((hanh vai) or (hanh tai)) sua chua*.