Perhaps you should try some spelling variations:
cuc triet » cua triet, su triet, cac trieu
bach tuoc » sach duoc, sach nuoc
hang tai » hang va, dung tai
hanh tai » thanh tai, han tai, hinh tai
su sach » so sach, vu sach
bac tuc » bac tu, bac thua
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
y nang » ky nang, ly nang, v nang

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 ((bac tuc) or (bach tuoc)) va ((hanh tai) OR (hang tai)) cuc triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang xa hoi. hieu va ((bac tuc) OR (bach tuoc)) va ((hanh tai) OR (hang tai)) cuc triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang xa hoi. hieu va ((bac tuc) or (bach tuoc)) va ((hanh tai) OR (hang tai)) cuc triet".
• Adding a wildcard symbol may retrieve word variants: su sach y nang xa hoi. hieu va ((bac tuc) or (bach tuoc)) va ((hanh tai) OR (hang tai)) cuc triet*.