Perhaps you should try some spelling variations:
van tham » van thanh, van tuan, van chat
hieu van » hieu va, thien van, lieu va
dinh cuu » dinh chi
vinh cuu » sinh cua, dinh cu, tinh cua
tham soc » cham soc, tham nuoc, thai son
va danh » va dinh, va dan, va hanh
tang xa » trang xa, tang ma, lang xa
sang ky » sang kyo, dang ky, tang ky
san ky » van ky, dan ky, ban ky
soc va » hoc va, loc va, doc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((san ky) OR (sang ky)) tang xa hoi. hieu van tham soc va danh ((vinh cuu) or (dinh cuu)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((san ky) OR (sang ky)) tang xa hoi. hieu van tham soc va danh ((vinh cuu) OR (dinh cuu)) tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((san ky) OR (sang ky)) tang xa hoi. hieu van tham soc va danh ((vinh cuu) or (dinh cuu)) tre*".