Perhaps you should try some spelling variations:
ve triet » va trien, su triet
thu sach » thuat sach, thuoc sach, thu hoach
chay tu » chay tui, chai tu, chay dua
dinh va » dinh van, dinh ve, tinh va
va dinh » van dinh, va kinh, va tinh
pham tu » phan tu, pham thi, pham tai
tu sach » su sach, te sach, tu cach
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
va ve » va de, va le, va vi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (thu sach)) ky nang xa hoi. hieu ve ((chay tu) or (pham tu)) va dinh va ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ky nang xa hoi. hieu ve ((chay tu) OR (pham tu)) va dinh va ve triet.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) ky nang xa hoi. hieu ve ((chay tu) or (pham tu)) va dinh va ve triet*.