Perhaps you should try some spelling variations:
tham hang » pham hang, thai hang, tham lang
sach tham » sach nha
cua viet » ca viet, hoa viet, cua vat
van hanh » van thanh, ban hanh, van anh
xuc van » duc van, luc van, vuc van
ve cham » va cham, ve chat, vu cham
vu sach » vu bach, su sach, vu khach
ve cam » ve cac, va cam, ve cai
vi cua » vai cua, di cua
o hoi » co hoi, o hoc, o hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach tham hang ((5 hoi) or (o hoi)). hieu ((ve cam) or (ve cham)) xuc van hanh vi cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach tham hang ((5 hoi) OR (o hoi)). hieu ((ve cam) OR (ve cham)) xuc van hanh vi cua viet.
• Adding a wildcard symbol may retrieve word variants: vu sach tham hang ((5 hoi) or (o hoi)). hieu ((ve cam) or (ve cham)) xuc van hanh vi cua viet*.