Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
sang tao » hang tai
truc va » thuc va, thuc vat, trung va
van cau » van dau, van hau, van chat
tao hai » tao dai, tao tai, tai hai
su sach » so sach
ky sang » ky nang, ky dang, ky tang
vu sach » vu bach, vu khach
dan vi » doan vi, dan va, gan vi
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 sang tao hai. hieu van cau truc va ((dan vi) or (don vi)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) ky sang tao hai. hieu van cau truc va ((dan vi) OR (don vi)) cua te.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu sach)) ky sang tao hai. hieu van cau truc va ((dan vi) or (don vi)) cua te*.