Perhaps you should try some spelling variations:
toc cham » toc thai
luu tre » luu tru, cuu tre, luy tre
ky dang » ky nang, ky danh
dang ha » dong ha, dung ha, lang ha
ve cham » va cham, ve chat, vu cham
cua dan » cua dang, cua ban, ca dan
tu cham » thi cham
vi luu » vi lua
dan vi » doan vi, don vi, dan va
tu san » thu san, tu ban, tu can
san ky » sang ky, van ky, dan ky
ha hoi » hoa hoi, ha noi, xa hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu san ky dang ha hoi. hieu ((ve cham) or (((tu cham) OR (toc cham)))) hoc cua dan vi luu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky dang ha hoi. hieu ((ve cham) OR (((tu cham) OR (toc cham)))) hoc cua dan vi luu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu san ky dang ha hoi. hieu ((ve cham) or (((tu cham) OR (toc cham)))) hoc cua dan vi luu tre".
• Adding a wildcard symbol may retrieve word variants: tu san ky dang ha hoi. hieu ((ve cham) or (((tu cham) OR (toc cham)))) hoc cua dan vi luu tre*.