Perhaps you should try some spelling variations:
thuoc giao » hoc giao, thuat giao, nuoc giao
cua triet » cua viet, su triet, va triet
giao hanh » giao thanh, gia hanh, gian thanh
tac thuoc » tao thuoc, truc thuoc, tac thuong
cau treo » cau theo, cau tren, cau triet
sach ly » sach y, sach lo, sach ty
so sach » so sanh, bo sach, co sach
hang ca » hang va, nang cao, hang tai
hang xa » hoang xa, hang va, lang xa
hieu va » lieu va, hieu qua
va tac » va cac

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 ((hang xa) OR (hang ca)) hoi. hieu va tac thuoc giao hanh vi ((cau treo) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ly ((hang xa) OR (hang ca)) hoi. hieu va tac thuoc giao hanh vi ((cau treo) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ly ((hang xa) OR (hang ca)) hoi. hieu va tac thuoc giao hanh vi ((cau treo) or (cua triet))".
• Adding a wildcard symbol may retrieve word variants: so sach ly ((hang xa) OR (hang ca)) hoi. hieu va tac thuoc giao hanh vi ((cau treo) or (cua triet))*.