Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hoc giai » hoc giao, hoc dai, hoc bai
thanh va » thanh van, hanh va, thanh ha
cau treo » cau theo, cau tren, cau triet
so sach » so sanh, bo sach, co sach
sach ly » sach y, sach lo, sach ty
ly nang » ky nang, ly hang, ly vang
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua

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

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