Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
ban thanh » ban hanh, ban hang
vu sach » vu bach, vu khach
van cua » vang cua, ban cua, dan cua
duc ban » duc tan, duc van, dua ban
ty nang » ky nang, ty xang, ty hang
nang so » nang som, nang co, nang ho
su sach » so sach
so hai » son hai, su hai, so ha
ve cam » ve cham, ve cac, va cam
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: ((vu sach) OR (su sach)) ty nang so hai. hieu ((ve cam) or (va cac)) duc ban thanh van cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (su sach)) ty nang so hai. hieu ((ve cam) OR (va cac)) duc ban thanh van cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) OR (su sach)) ty nang so hai. hieu ((ve cam) or (va cac)) duc ban thanh van cua te".
• Adding a wildcard symbol may retrieve word variants: ((vu sach) OR (su sach)) ty nang so hai. hieu ((ve cam) or (va cac)) duc ban thanh van cua te*.