Perhaps you should try some spelling variations:
thuat san » thuat toan, thuat song, thuat lanh
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
ky tang » ky nang, kho tang, ky trong
hang di » hang doi, hang vi, hang dien
hanh di » hanh vi, hanh de, danh di
cam tuc » cam xuc, cam tu, nam thuc
ky dang » ky nang, ky danh
van cam » van nam, van lam, van cau
tuc va » thuc va, truc va, tuc xa
ho hoi » hoc hoi, hoa hoi, hoi hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat san ((ky tang) OR (ky dang)) ho hoi. hieu van cam tuc va ((hanh di) or (hang di)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat san ((ky tang) OR (ky dang)) ho hoi. hieu van cam tuc va ((hanh di) OR (hang di)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat san ((ky tang) OR (ky dang)) ho hoi. hieu van cam tuc va ((hanh di) or (hang di)) cua triet".
• Adding a wildcard symbol may retrieve word variants: thuat san ((ky tang) OR (ky dang)) ho hoi. hieu van cam tuc va ((hanh di) or (hang di)) cua triet*.