Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thien cac » hien cac, thien cau, trien cac
thieu cac » hieu cac, hieu ca, chieu cao
nang xa » nang x, lang xa, nang ma
sach ky » sac ky, sach y, sach ty
xa tinh » va tinh, ha tinh, xa sinh
ca tinh » cua tinh, cac tinh, va tinh
te sach » toc sach
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang xa hoi. hieu ((thien cac) OR (thieu cac)) tu ((xa tinh) or (ca tinh)) di cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang xa hoi. hieu ((thien cac) OR (thieu cac)) tu ((xa tinh) OR (ca tinh)) di cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang xa hoi. hieu ((thien cac) OR (thieu cac)) tu ((xa tinh) or (ca tinh)) di cua triet".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang xa hoi. hieu ((thien cac) OR (thieu cac)) tu ((xa tinh) or (ca tinh)) di cua triet*.