Perhaps you should try some spelling variations:
tay lang » tai lang, tay tang, tay quang
thanh vi » hanh vi, thanh va, thanh ve
su sach » so sach, vu sach
hieu va » lieu va, hieu qua
va cham » va chat, va tham
luy tre » luyen tre
y lang » o lang, _ lang, yen lang
xuc va » tuc va, luc va, xac va
vi luy » vi lua, vi luu

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((y lang) OR (tay lang)) xa hoi. hieu va cham ((xuc va) or (duc va)) thanh vi luy tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((y lang) OR (tay lang)) xa hoi. hieu va cham ((xuc va) OR (duc va)) thanh vi luy tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((y lang) OR (tay lang)) xa hoi. hieu va cham ((xuc va) or (duc va)) thanh vi luy tre*".