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
sach ky » sac ky, sach y, sach ty
bac tuc » bac tu, bac thua
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma

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 ky 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 ky 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 ky nang xa hoi. hieu va ((bac tuc) or (bach tuoc)) va ((hanh tai) or (hang tai)) cuc triet*.