Perhaps you should try some spelling variations:
te sach » toc sach
sach ty » sach y, sach tu, sach thu
va danh » va dinh, va dan, dia danh
va hanh » van hanh, va thanh, ban hanh
va cham » va chat, va tham
ty nang » ky nang, ty xang, ty hang
cu tren » tu tren, dua tren
ve cam » ve cham, ve cac, va cam
vai cu » vai cua, van cu
x hoi » xa hoi, o hoi, x ho

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ty nang x hoi. hieu ((ve cam) or (va cham)) tuc ((va hanh) OR (va danh)) vai cu tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang x hoi. hieu ((ve cam) OR (va cham)) tuc ((va hanh) OR (va danh)) vai cu tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty nang x hoi. hieu ((ve cam) or (va cham)) tuc ((va hanh) OR (va danh)) vai cu tren".
• Adding a wildcard symbol may retrieve word variants: te sach ty nang x hoi. hieu ((ve cam) or (va cham)) tuc ((va hanh) OR (va danh)) vai cu tren*.