Perhaps you should try some spelling variations:
tinh vai » tinh va, tinh hai, tinh bai
cham hoc » chat hoc, cham hoi, cho hoc
sach ly » sach y, sach lo, sach ty
vai cua » dai cua, hai cua, lai cua
va tinh » may tinh
su sach » so sach, vu sach
hieu va » lieu va
hang ma » hang va, hang ca, tang ma
ly hang » ly quang
ma hoi » mai hoi, xa hoi, ma hoa
cua te » cua tu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ly hang ma hoi. ((hieu va) OR (hieu qua)) ((cham hoc) OR (cham soc)) va tinh vai cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ly hang ma hoi. ((hieu va) or (hieu qua)) ((cham hoc) OR (cham soc)) va tinh vai cua te~".
• Adding a wildcard symbol may retrieve word variants: su sach ly hang ma hoi. ((hieu va) or (hieu qua)) ((cham hoc) OR (cham soc)) va tinh vai cua te*.