Perhaps you should try some spelling variations:
nang lap » nang cap, sang lap, nang lam
su sach » so sach, vu sach
vu khac » vu kham, vu khanh, bui khac
lap hai » lap tai, lap lai, lap hoat
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
vi cua » vai cua, di cua
ve cac » va cac, vien cac
va cam » va cham, va cac, va cao
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 khac)) ky nang lap hai. hieu ((ve cac) or (va cam)) duc va danh vi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu khac)) ky nang lap hai. hieu ((ve cac) OR (va cam)) duc va danh vi cua tu.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu khac)) ky nang lap hai. hieu ((ve cac) or (va cam)) duc va danh vi cua tu*.