Perhaps you should try some spelling variations:
nhanh thai » nhanh thi, nhanh thanh, nhanh thang
hanh hoi » hanh thoi, hanh noi, hanh hoa
cua tre » cua te, cuu tre, cua triet
cam tuc » cam xuc, cam tu, nam thuc
hieu va » lieu va, hieu qua
ky tang » ky nang, ky dang, kho tang
ky sang » ky nang, ky dang, duy sang
va cam » va cham, va cac, va cao
tuc va » thuc va, truc va, tuc xa
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 sang) OR (ky tang)) xa hoi. hieu va cam tuc va ((hanh hoi) or (nhanh thai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ((ky sang) OR (ky tang)) xa hoi. hieu va cam tuc va ((hanh hoi) OR (nhanh thai)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ((ky sang) OR (ky tang)) xa hoi. hieu va cam tuc va ((hanh hoi) or (nhanh thai)) cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sac ((ky sang) OR (ky tang)) xa hoi. hieu va cam tuc va ((hanh hoi) or (nhanh thai)) cua tre*.