Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
thanh lap » thanh san, phan lap, thanh van
cua viet » ca viet, hoa viet, cua vat
nang xa » nang x, lang xa, nang ma
thi van » thi lan, thi hanh, thi nang
sach ky » sac ky, sach ty, sach kem
van bac » van ban, van bao, van hac
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((sach ky) or (sach y)) nang xa hoi. thi van bac xuc va ((thanh lap) OR (thanh hai)) cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((sach ky) OR (sach y)) nang xa hoi. thi van bac xuc va ((thanh lap) OR (thanh hai)) cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc ((sach ky) or (sach y)) nang xa hoi. thi van bac xuc va ((thanh lap) OR (thanh hai)) cua viet".
• Adding a wildcard symbol may retrieve word variants: toc ((sach ky) or (sach y)) nang xa hoi. thi van bac xuc va ((thanh lap) OR (thanh hai)) cua viet*.