Perhaps you should try some spelling variations:
thien chien » thien nhien
chien cac » hien cac, thien cac, chien cuoc
truc ban » thuc ban, truc dan, truc van
su sach » so sach, vu sach
van hoc » van hoa
van hoi » van hoa, van hoe, van loi
sach o » sach lo, sac o, sach y
tu ban » thu ban, te ban
o lang » hoa lang, hoi lang
vi cua » vai cua, di cua
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 o lang ((van hoi) or (van hoc)). thien chien cac ((tu ban) or (truc ban)) hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach o lang ((van hoi) OR (van hoc)). thien chien cac ((tu ban) OR (truc ban)) hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: su sach o lang ((van hoi) or (van hoc)). thien chien cac ((tu ban) or (truc ban)) hanh vi cua te*.