Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
tuc van » thuc van, truc van, tuc va
cam tuc » cam xuc, cam tu, nam thuc
hieu ve » hieu va, hieu van
vu sach » vu bach, su sach, vu khach
nang ma » tang ma, sang ma, nang cao
so sach » so sanh, bo sach, co sach
ma hoi » mai hoi, xa hoi, ma hoa
voi su » voi suc, oi su, doi su
ve cam » ve cham, ve cac, va cam
vi su » va su, ve su, ki su

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) or (so sach)) ky nang ma hoi. hieu ve cam tuc van hanh ((voi su) OR (vi su)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (so sach)) ky nang ma hoi. hieu ve cam tuc van hanh ((voi su) OR (vi su)) triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) or (so sach)) ky nang ma hoi. hieu ve cam tuc van hanh ((voi su) OR (vi su)) triet*".