Perhaps you should try some spelling variations:
nhan luc » nang luc
van kinh » va kinh, van minh, van dinh
su triet » su viet, su tien, ve triet
tu sach » thu sach, su sach, te sach
lang xa » lang ha, dang xay, lang van
hieu va » hieu qua
luc van » luoc van, luu van, duc van
kinh ve » kinh te, dinh ve, minh ve
y lang » o lang, _ lang, tay lang
ve su » va su

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 y lang xa hoi. ((hieu va) or (lieu va)) nhan luc van kinh ve su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y lang xa hoi. ((hieu va) OR (lieu va)) nhan luc van kinh ve su triet.
• Adding a wildcard symbol may retrieve word variants: tu sach y lang xa hoi. ((hieu va) or (lieu va)) nhan luc van kinh ve su triet*.