Perhaps you should try some spelling variations:
sang tao » hang tai
su sach » so sach
truc va » thuc va, thuc vat, trung va
tao hai » tao dai, tao tai, tai hai
hieu ve » hieu va, hieu van
ky sang » ky nang, ky dang, ky tang
vu sach » vu bach, vu khach
ve cau » ke cau, va cau, ve cac
dan vi » doan vi, dan va, gan vi
cua tu » cua tuc, cua su, cua cu

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 ve cau truc va ((dan vi) or (don vi)) cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) ky sang tao hai. hieu ve cau truc va ((dan vi) OR (don vi)) cua tu.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu sach)) ky sang tao hai. hieu ve cau truc va ((dan vi) or (don vi)) cua tu*.