Perhaps you should try some spelling variations:
thuc giai » thuoc giao, hoc giai, thuc thai
giai hanh » giai han, gia hanh, giao hanh
cua triet » cua viet, su triet, va triet
cac thuc » cach thuc, cac thu, can thuc
cau theo » cau thi, cau tao
bo sach » co sach, hoc sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
hieu va » lieu va

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

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