Perhaps you should try some spelling variations:
tham soc » cham soc, tham nuoc, thai son
dinh cuu » dinh chi
tang xa » trang xa, tang ma, lang xa
hieu va » lieu va, hieu qua
va tham » van tham, va cham, va thanh
va hanh » van hanh, va thanh, va danh
sac ky » sai ky
soc va » hoc va, loc va, doc va
vi cuu » vi luu, vinh cuu

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

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