Perhaps you should try some spelling variations:
nang cau » nang cao, hang cau, nang dau
chua tre » chua tri, cua tre, chua trieu
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
ve chat » va chat, van chat
va danh » va dinh, va dan, va hanh
danh va » doanh va, hanh va, anh va
va chua » vua chua, ca chua, va chu
ve cai » va cai, ve cac, ve tai

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 ty nang cau hoi. hieu ((ve cai) or (ve chat)) ly va danh va chua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang cau hoi. hieu ((ve cai) OR (ve chat)) ly va danh va chua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang cau hoi. hieu ((ve cai) or (ve chat)) ly va danh va chua tre*.