Perhaps you should try some spelling variations:
thuy hanh » thuc hanh, thuy anh, thuy canh
thu hanh » thuc hanh, thu thanh, thi hanh
su triet » su tien, ve triet
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
su viet » so viet
ve cam » ve cham, ve cac, va cam
xuc va » duc va, tuc va, luc va
kem » kiem

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 ((thu hanh) or (thuy hanh)) xa hoi. hieu ve cam xuc va hanh kem ((su triet) or (su viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((thu hanh) OR (thuy hanh)) xa hoi. hieu ve cam xuc va hanh kem ((su triet) OR (su viet)).
• Adding a wildcard symbol may retrieve word variants: tu sach ((thu hanh) or (thuy hanh)) xa hoi. hieu ve cam xuc va hanh kem ((su triet) or (su viet))*.