Perhaps you should try some spelling variations:
thi hang » thi hanh, thi nang, thi hong
su sach » so sach, vu sach
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
hieu ve » hieu va, hieu van
ly hang » ly quang
xuc va » duc va, tuc va, luc va
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((ly hang) or (thi hang)) xa hoi. hieu ve cam xuc va hanh ((vai cuu) OR (vai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ly hang) OR (thi hang)) xa hoi. hieu ve cam xuc va hanh ((vai cuu) OR (vai cua)) tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ly hang) or (thi hang)) xa hoi. hieu ve cam xuc va hanh ((vai cuu) OR (vai cua)) tre*".