Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
nang mai » nang ma, nang tai, lang mai
van tuan » van quan, anh tuan
cua duc » cua tuc, cua nuoc, cua quoc
tu sach » thu sach, su sach, te sach
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
mai hoi » mai khoi, dai hoi, lai hoi
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
cua tu » cua tuc, cua su, cua cu

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 v nang mai hoi. hieu ve cham luc ((van tuan) OR (van ban)) vi ((cua duc) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach v nang mai hoi. hieu ve cham luc ((van tuan) OR (van ban)) vi ((cua duc) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach v nang mai hoi. hieu ve cham luc ((van tuan) OR (van ban)) vi ((cua duc) or (cua tu))".
• Adding a wildcard symbol may retrieve word variants: tu sach v nang mai hoi. hieu ve cham luc ((van tuan) OR (van ban)) vi ((cua duc) or (cua tu))*.