Perhaps you should try some spelling variations:
thoat nuoc » thuat nuoi
hieu van » hieu va, thien van, lieu va
tham soc » cham soc, tham nuoc, thai son
dinh cuu » dinh chi
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
va hanh » van hanh, va thanh, va danh
tu dan » tuc dan, tu ban, cu dan
dan ky » van ky
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: tu dan ky tang xa hoi. hieu van ((tham soc) or (thoat nuoc)) va hanh ((vi cuu) or (dinh cuu)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu dan ky tang xa hoi. hieu van ((tham soc) OR (thoat nuoc)) va hanh ((vi cuu) OR (dinh cuu)) tre.
• Adding a wildcard symbol may retrieve word variants: tu dan ky tang xa hoi. hieu van ((tham soc) or (thoat nuoc)) va hanh ((vi cuu) or (dinh cuu)) tre*.