Perhaps you should try some spelling variations:
phap thuc » phap thu, phap hoc, phap tu
cua viet » ca viet, hoa viet, cua vat
hieu tuc » hieu thuc, hieu luc, hieu thuoc
day manh » van manh, duc manh, ha manh
day danh » dai danh, dao danh, day dan
tuc phap » duc phap, tu phap, thuoc phap
nang ma » tang ma, sang ma, nang cao
te sach » toc sach
sai cua » dai cua, hai cua, lai cua
tu sach » thu sach, su sach, tu cach
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (te sach)) ky nang ma hoi. hieu tuc phap thuc ((day danh) or (day manh)) sai cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ky nang ma hoi. hieu tuc phap thuc ((day danh) OR (day manh)) sai cua viet.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) ky nang ma hoi. hieu tuc phap thuc ((day danh) or (day manh)) sai cua viet*.