Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
ve triet » va trien, su triet
lang van » dang van, tang van, hoang van
hanh vai » hanh vi, hanh va, hanh tai
viec cac » vien cac, viec cua, viec lam
va hanh » van hanh, va thanh, va danh
cac tuc » cac toc, cac tu, cac tac
su sach » so sach
lang xa » lang ha, dang xay
vu sach » vu bach, vu khach
tuc va » thuc va, truc va, tuc xa
vai ve » va ve, dai ve, vai va

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) or (vu sach)) ky ((lang xa) or (lang van)) hoi. hieu viec cac tuc va hanh vai ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) ky ((lang xa) OR (lang van)) hoi. hieu viec cac tuc va hanh vai ve triet.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu sach)) ky ((lang xa) or (lang van)) hoi. hieu viec cac tuc va hanh vai ve triet*.