Perhaps you should try some spelling variations:
nang noi » nang doc
qua cuac » qua cac, cua cac, qua quan
van hanh » van thanh, ban hanh, van anh
tu sach » thu sach, su sach, te sach
nang ro » nang co, nang ho, nang ra
qua cua » quan cua, quang cua, qua quan
tuc van » thuc van, truc van, tuc va
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: tu sach y ((nang noi) or (nang ro)) hoi. hieu ((qua cua) or (qua cuac)) tuc van hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y ((nang noi) OR (nang ro)) hoi. hieu ((qua cua) OR (qua cuac)) tuc van hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: tu sach y ((nang noi) or (nang ro)) hoi. hieu ((qua cua) or (qua cuac)) tuc van hanh vi cua te*.