Perhaps you should try some spelling variations:
ve triet » va trien, su triet
hanh lam » thanh lap, hanh kem, hanh va
thu hanh » thuc hanh, thu thanh, thuy hanh
trung va » truong va, trang va, trung ha
tu sach » thu sach, su sach, tu cach
hieu ve » hieu va, hieu van
hanh xa » hanh va, hanh ma, hanh xu
te sach » toc sach
xuc va » duc va, tuc va, luc va
lam ve » la ve, lam vu, nam ve
ve cam » ve cham, ve cac, va cam

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 (te sach)) thu hanh xa hoi. hieu ve cam ((xuc va) or (trung va)) hanh lam ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) thu hanh xa hoi. hieu ve cam ((xuc va) OR (trung va)) hanh lam ve triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (te sach)) thu hanh xa hoi. hieu ve cam ((xuc va) or (trung va)) hanh lam ve triet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (te sach)) thu hanh xa hoi. hieu ve cam ((xuc va) or (trung va)) hanh lam ve triet*.