Perhaps you should try some spelling variations:
thien van » thi van
hieu van » hieu va, lieu va, hieu ve
cham tuc » nham thuc, pham thuc, tham thuc
co sach » bo sach, cuon sach, hoc sach
sach ly » sach y, sach lo, sach ty
ly nang » ky nang, ly hang, ly vang
va hanh » van hanh, va thanh, va danh
cu tren » tu tren, dua tren
tuc va » thuc va, truc va, tuc xa
x hoi » xa hoi, o hoi, x ho
vi cu » vi su, vi xu, vi du

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

• Performing a fuzzy search may retrieve terms with similar spellings: co sach ly nang x hoi. ((hieu van) or (thien van)) cham tuc va hanh vi cu tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: co sach ly nang x hoi. ((hieu van) OR (thien van)) cham tuc va hanh vi cu tren.
• Adding a wildcard symbol may retrieve word variants: co sach ly nang x hoi. ((hieu van) or (thien van)) cham tuc va hanh vi cu tren*.