Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh va » thanh van, hanh va, thanh ha
nang xa » nang x, lang xa, nang ma
qua cac » cua cac
thuc va » thuc vat, thuc dan, thuc day
cua tre » cua te, cuu tre, dua tren
so sac » so sach, so dac
sac ky » cac ky, sai ky
tuc va » truc va, tuc xa, duc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sac ky nang xa hoi. hieu qua cac ((tuc va) OR (thuc va)) thanh va ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sac ky nang xa hoi. hieu qua cac ((tuc va) OR (thuc va)) thanh va ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sac ky nang xa hoi. hieu qua cac ((tuc va) OR (thuc va)) thanh va ((cua tre) or (cua triet))".
• Adding a wildcard symbol may retrieve word variants: so sac ky nang xa hoi. hieu qua cac ((tuc va) OR (thuc va)) thanh va ((cua tre) or (cua triet))*.