Perhaps you should try some spelling variations:
nang tai » hang tai, tang tai, sang tai
van hanh » van thanh, ban hanh, van anh
sach ly » sach y, sach lo, sach ty
xuc van » duc van, luc van, vuc van
vu sach » vu bach, su sach, vu khach
tai hoi » tai khoi, dai hoi, tai hai
ly nang » ky nang, ly hang, ly vang
va cam » va cham, va cao, va cai
di cua » dai cua, doi cua, do cua
de cua » le cua, te cua, dieu 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 ly nang tai hoi. hieu ((va cam) or (va cac)) xuc van hanh ((di cua) OR (de cua)) quoc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ly nang tai hoi. hieu ((va cam) OR (va cac)) xuc van hanh ((di cua) OR (de cua)) quoc*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ly nang tai hoi. hieu ((va cam) or (va cac)) xuc van hanh ((di cua) OR (de cua)) quoc*".