Perhaps you should try some spelling variations:
nang mai » nang ma, nang tai, lang mai
cham cuu » cap cuu
chat cua » nhat cua, chat va, chat huu
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
mai hoi » mai khoi, dai hoi, lai hoi
va hanh » van hanh, va thanh, va danh
cu tren » tu tren, dua tren
vi cu » vi su, vi xu, vi du

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 ky nang mai hoi. lieu va ((cham cuu) or (chat cua)) va hanh vi cu tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang mai hoi. lieu va ((cham cuu) OR (chat cua)) va hanh vi cu tren.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang mai hoi. lieu va ((cham cuu) or (chat cua)) va hanh vi cu tren*.