Perhaps you should try some spelling variations:
hieu hien » bieu hien, dieu hien, chieu chien
hien cac » thien cac, vien cac, hieu cac
hanh vai » hanh vi, hanh va, hanh tai
su sach » so sach
vu sach » vu bach, vu khach
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
cac ly » cac ky, cac le, cam ly
cua te » cua tu

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) OR (vu sach)) ky lang xa hoi. hieu hien cac ly va hanh vai cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (vu sach)) ky lang xa hoi. hieu hien cac ly va hanh vai cua te".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (vu sach)) ky lang xa hoi. hieu hien cac ly va hanh vai cua te*.