Perhaps you should try some spelling variations:
thi nang » thi cong, thi hanh
cam duc » cam xuc, cao duc, pham duc
lai cua » dai cua, hai cua, lai chau
vai cua » dai cua, hai cua, bai cua
va danh » va dinh, va dan, va hanh
vu sach » vu bach, su sach, vu khach
ki nang » ky nang
hieu ve » hieu va, hieu van
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: vu sach ((thi nang) OR (ki nang)) xa hoi. hieu ve cam duc va danh ((vai cua) or (lai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ((thi nang) OR (ki nang)) xa hoi. hieu ve cam duc va danh ((vai cua) OR (lai cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ((thi nang) OR (ki nang)) xa hoi. hieu ve cam duc va danh ((vai cua) or (lai cua)) triet".
• Adding a wildcard symbol may retrieve word variants: vu sach ((thi nang) OR (ki nang)) xa hoi. hieu ve cam duc va danh ((vai cua) or (lai cua)) triet*.