Perhaps you should try some spelling variations:
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va hang » van hang, va nang, va lang
hang di » hang doi, hang vi, hang dien
cua tre » cuu tre, cua triet, dua tren
y nang » ky nang, ly nang, v nang
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach y nang xa hoi. hieu va cac nuoc va hang di ((cua tre) OR (cua te))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang xa hoi. hieu va cac nuoc va hang di ((cua tre) OR (cua te))".
• Adding a wildcard symbol may retrieve word variants: su sach y nang xa hoi. hieu va cac nuoc va hang di ((cua tre) OR (cua te))*.