Perhaps you should try some spelling variations:
thieu cac » thien cac, hieu ca, chieu cao
cua triet » cua viet, su triet, va triet
hieu cac » hieu luc, hieu va, hieu van
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
va hanh » van hanh, va thanh, va danh
tuc va » thuc va, truc va, tuc xa
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ky nang xa hoi. hieu ((hieu cac) or (thieu cac)) tuc va hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky nang xa hoi. hieu ((hieu cac) OR (thieu cac)) tuc va hanh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: vu sach ky nang xa hoi. hieu ((hieu cac) or (thieu cac)) tuc va hanh vi cua triet*.