Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
van hanh » van thanh, ban hanh, van anh
lam chat » luan chat, cao chat, ly chat
ty hang » ly hang, ty xang, thi hang
hieu ve » hieu va, hieu van
chao tu » chao xu, cho tu, cao tu
su sach » so sach, vu sach
lam cua » nam cua
ve chao » ve chat, ve cham, ve cho
hang x » nang x, hoang xa, chang xu
tu van » tu va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thuat sach) or (su sach)) ty hang x ho. hieu ve chao tu van hanh ((lam cua) OR (lam chat)) vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuat sach) OR (su sach)) ty hang x ho. hieu ve chao tu van hanh ((lam cua) OR (lam chat)) vat*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuat sach) or (su sach)) ty hang x ho. hieu ve chao tu van hanh ((lam cua) OR (lam chat)) vat*".