Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
luc van » luoc van, luu van, luc va
duc van » duc va, duc tan, duc manh
vai cua » dai cua, hai cua, lai cua
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
va cau » van cau, va cac, va dau
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: tu sach v nang xa hoi. hieu va cau ((luc van) OR (duc van)) thanh vai cua tu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach v nang xa hoi. hieu va cau ((luc van) OR (duc van)) thanh vai cua tu".
• Adding a wildcard symbol may retrieve word variants: tu sach v nang xa hoi. hieu va cau ((luc van) OR (duc van)) thanh vai cua tu*.