Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
thu sach » tu sach, thuat sach, thuoc sach
phap lap » phan lap, phap lam, phap luat
va triet » va thiet, va trien, ve triet
hieu vu » hieu va, hieu su, dieu vu
sach ty » sach y, sach tu, sach thu
truc va » thuc va, thuc vat, trung va
va phap » va phat, ban phap
nang ho » nang hoc, nang co, tang ho
ty nang » ky nang, ty xang, ty hang
hieu ve » hieu va, hieu van
ho hoi » hoc hoi, hoa hoi, hoi hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ty nang ho hoi. ((hieu vu) OR (hieu ve)) cau truc va phap lap ((cua triet) or (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty nang ho hoi. ((hieu vu) OR (hieu ve)) cau truc va phap lap ((cua triet) OR (va triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ty nang ho hoi. ((hieu vu) OR (hieu ve)) cau truc va phap lap ((cua triet) or (va triet))".
• Adding a wildcard symbol may retrieve word variants: thu sach ty nang ho hoi. ((hieu vu) OR (hieu ve)) cau truc va phap lap ((cua triet) or (va triet))*.