Perhaps you should try some spelling variations:
sang lap » sang tao, sang ma, sang tai
su sach » so sach
truc va » thuc va, thuc vat, trung va
lap hai » lap tai, lap lai, lap hoat
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 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 lap hai. hieu ve 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 lap hai. hieu ve 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 lap hai. hieu ve cau truc va ((dan vi) or (don vi)) cua te*.