Perhaps you should try some spelling variations:
thuc dan » thuc hanh, hoc dan, thuc vat
hieu van » hieu va, thien van, lieu va
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
van cam » van nam, van lam, van cau
cam duc » cam xuc, cao duc, pham duc
va hanh » van hanh, va thanh, va danh
tu dan » tuc dan, tu ban, cu dan
de cua » le cua, te cua, dieu cua

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) OR (thuc dan)) ky lang xa hoi. hieu van cam duc va hanh ((dai cua) OR (de cua)) triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu dan) OR (thuc dan)) ky lang xa hoi. hieu van cam duc va hanh ((dai cua) OR (de cua)) triet".
• Adding a wildcard symbol may retrieve word variants: ((tu dan) OR (thuc dan)) ky lang xa hoi. hieu van cam duc va hanh ((dai cua) OR (de cua)) triet*.